diff --git a/toolchain/check/testdata/alias/fail_bool_value.carbon b/toolchain/check/testdata/alias/fail_bool_value.carbon
index c27e7bc6615b..b88cb60cc633 100644
--- a/toolchain/check/testdata/alias/fail_bool_value.carbon
+++ b/toolchain/check/testdata/alias/fail_bool_value.carbon
@@ -27,14 +27,7 @@ let a_test: bool = a;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/alias/fail_builtins.carbon b/toolchain/check/testdata/alias/fail_builtins.carbon
index 55c3dc0c84b8..eda7939a88b3 100644
--- a/toolchain/check/testdata/alias/fail_builtins.carbon
+++ b/toolchain/check/testdata/alias/fail_builtins.carbon
@@ -34,14 +34,7 @@ alias b = bool;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/alias/fail_control_flow.carbon b/toolchain/check/testdata/alias/fail_control_flow.carbon
index 1f744167ab8c..41cbd1e81b70 100644
--- a/toolchain/check/testdata/alias/fail_control_flow.carbon
+++ b/toolchain/check/testdata/alias/fail_control_flow.carbon
@@ -31,14 +31,7 @@ alias a = true or false;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace <unexpected>.inst+1, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/array/array_in_place.carbon b/toolchain/check/testdata/array/array_in_place.carbon
index 906a73394e86..d668dbeae506 100644
--- a/toolchain/check/testdata/array/array_in_place.carbon
+++ b/toolchain/check/testdata/array/array_in_place.carbon
@@ -39,14 +39,7 @@ fn G() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/array_vs_tuple.carbon b/toolchain/check/testdata/array/array_vs_tuple.carbon
index f8f35442da0a..d1744772b7df 100644
--- a/toolchain/check/testdata/array/array_vs_tuple.carbon
+++ b/toolchain/check/testdata/array/array_vs_tuple.carbon
@@ -39,14 +39,7 @@ fn G() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/assign_return_value.carbon b/toolchain/check/testdata/array/assign_return_value.carbon
index c34c5012ae97..a968e70cfa0f 100644
--- a/toolchain/check/testdata/array/assign_return_value.carbon
+++ b/toolchain/check/testdata/array/assign_return_value.carbon
@@ -37,14 +37,7 @@ fn Run() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/assign_var.carbon b/toolchain/check/testdata/array/assign_var.carbon
index ce6306b57f07..0687ca7e9174 100644
--- a/toolchain/check/testdata/array/assign_var.carbon
+++ b/toolchain/check/testdata/array/assign_var.carbon
@@ -33,14 +33,7 @@ var b: [i32; 3] = a;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/base.carbon b/toolchain/check/testdata/array/base.carbon
index a10d8698f964..8f51f9052922 100644
--- a/toolchain/check/testdata/array/base.carbon
+++ b/toolchain/check/testdata/array/base.carbon
@@ -49,14 +49,7 @@ var c: [(); 5] = ((), (), (), (), (),);
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/array/canonicalize_index.carbon b/toolchain/check/testdata/array/canonicalize_index.carbon
index 88df6961cc90..45a37b800276 100644
--- a/toolchain/check/testdata/array/canonicalize_index.carbon
+++ b/toolchain/check/testdata/array/canonicalize_index.carbon
@@ -35,14 +35,7 @@ let b: [i32; 3]* = &a;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/fail_bound_negative.carbon b/toolchain/check/testdata/array/fail_bound_negative.carbon
index 8ba5147eed3f..66a432ada728 100644
--- a/toolchain/check/testdata/array/fail_bound_negative.carbon
+++ b/toolchain/check/testdata/array/fail_bound_negative.carbon
@@ -31,14 +31,7 @@ var a: [i32; Negate(1)];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/fail_bound_overflow.carbon b/toolchain/check/testdata/array/fail_bound_overflow.carbon
index db7ae434657b..b4668b6592fe 100644
--- a/toolchain/check/testdata/array/fail_bound_overflow.carbon
+++ b/toolchain/check/testdata/array/fail_bound_overflow.carbon
@@ -60,14 +60,7 @@ var b: [1; 39999999999999999993];
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/array/fail_incomplete_element.carbon b/toolchain/check/testdata/array/fail_incomplete_element.carbon
index bba27999a0c9..ebcd8c5c41ff 100644
--- a/toolchain/check/testdata/array/fail_incomplete_element.carbon
+++ b/toolchain/check/testdata/array/fail_incomplete_element.carbon
@@ -33,14 +33,7 @@ var p: Incomplete* = &a[0];
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/array/fail_invalid_type.carbon b/toolchain/check/testdata/array/fail_invalid_type.carbon
index a47ab2d36b87..ceb411db4c3e 100644
--- a/toolchain/check/testdata/array/fail_invalid_type.carbon
+++ b/toolchain/check/testdata/array/fail_invalid_type.carbon
@@ -44,14 +44,7 @@ var a: [1; 1];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/array/fail_out_of_bound.carbon b/toolchain/check/testdata/array/fail_out_of_bound.carbon
index 9f96538fc788..83726e2b60f5 100644
--- a/toolchain/check/testdata/array/fail_out_of_bound.carbon
+++ b/toolchain/check/testdata/array/fail_out_of_bound.carbon
@@ -31,14 +31,7 @@ var a: [i32; 1] = (1, 2, 3);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/fail_out_of_bound_non_literal.carbon b/toolchain/check/testdata/array/fail_out_of_bound_non_literal.carbon
index 09fe2781b645..778cb164c280 100644
--- a/toolchain/check/testdata/array/fail_out_of_bound_non_literal.carbon
+++ b/toolchain/check/testdata/array/fail_out_of_bound_non_literal.carbon
@@ -36,14 +36,7 @@ var b: i32 = a[{.index = 3}.index];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/fail_type_mismatch.carbon b/toolchain/check/testdata/array/fail_type_mismatch.carbon
index ee800c28a459..68f163ca38ab 100644
--- a/toolchain/check/testdata/array/fail_type_mismatch.carbon
+++ b/toolchain/check/testdata/array/fail_type_mismatch.carbon
@@ -85,14 +85,7 @@ var d: [i32; 3] = t2;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/array/function_param.carbon b/toolchain/check/testdata/array/function_param.carbon
index ccee40a57fdb..4875dee3e661 100644
--- a/toolchain/check/testdata/array/function_param.carbon
+++ b/toolchain/check/testdata/array/function_param.carbon
@@ -40,14 +40,7 @@ fn G() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/generic_empty.carbon b/toolchain/check/testdata/array/generic_empty.carbon
index 6204b08b37df..c192ade3ef04 100644
--- a/toolchain/check/testdata/array/generic_empty.carbon
+++ b/toolchain/check/testdata/array/generic_empty.carbon
@@ -30,14 +30,7 @@ fn G(T:! type) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/array/index_not_literal.carbon b/toolchain/check/testdata/array/index_not_literal.carbon
index 7aea8be1b629..169da4a2ba01 100644
--- a/toolchain/check/testdata/array/index_not_literal.carbon
+++ b/toolchain/check/testdata/array/index_not_literal.carbon
@@ -33,14 +33,7 @@ var b: i32 = a[{.index = 2}.index];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/array/nine_elements.carbon b/toolchain/check/testdata/array/nine_elements.carbon
index 6b898dc1ed6c..4634059080d2 100644
--- a/toolchain/check/testdata/array/nine_elements.carbon
+++ b/toolchain/check/testdata/array/nine_elements.carbon
@@ -36,14 +36,7 @@ var a: [i32; 9] = (1, 2, 3, 4, 5, 6, 7, 8, 9);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/as/adapter_conversion.carbon b/toolchain/check/testdata/as/adapter_conversion.carbon
index e7cad908a427..da57104665ca 100644
--- a/toolchain/check/testdata/as/adapter_conversion.carbon
+++ b/toolchain/check/testdata/as/adapter_conversion.carbon
@@ -130,14 +130,7 @@ var b: B = {.x = 1} as B;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -271,14 +264,7 @@ var b: B = {.x = 1} as B;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -347,14 +333,7 @@ var b: B = {.x = 1} as B;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -442,14 +421,7 @@ var b: B = {.x = 1} as B;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -577,14 +549,7 @@ var b: B = {.x = 1} as B;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .As = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %As.type.1 = import_ref Core//prelude/operators/as, inst+7, loaded [template = constants.%As]
diff --git a/toolchain/check/testdata/as/as_type.carbon b/toolchain/check/testdata/as/as_type.carbon
index a9c74b197fb1..b49e1d45284a 100644
--- a/toolchain/check/testdata/as/as_type.carbon
+++ b/toolchain/check/testdata/as/as_type.carbon
@@ -24,14 +24,7 @@ let t: type = (i32, i32) as type;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/as/basic.carbon b/toolchain/check/testdata/as/basic.carbon
index 7685b1c77c64..826bb3d0a4fa 100644
--- a/toolchain/check/testdata/as/basic.carbon
+++ b/toolchain/check/testdata/as/basic.carbon
@@ -27,14 +27,7 @@ fn Main() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/as/fail_no_conversion.carbon b/toolchain/check/testdata/as/fail_no_conversion.carbon
index 0392eeafaf05..8f0c5932d44d 100644
--- a/toolchain/check/testdata/as/fail_no_conversion.carbon
+++ b/toolchain/check/testdata/as/fail_no_conversion.carbon
@@ -50,14 +50,7 @@ let n: (i32, i32) = 1 as (i32, i32);
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .As = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %As.type.1 = import_ref Core//prelude/operators/as, inst+7, loaded [template = constants.%As]
diff --git a/toolchain/check/testdata/as/fail_not_type.carbon b/toolchain/check/testdata/as/fail_not_type.carbon
index f04de0c2c3f8..07fe936f5299 100644
--- a/toolchain/check/testdata/as/fail_not_type.carbon
+++ b/toolchain/check/testdata/as/fail_not_type.carbon
@@ -48,14 +48,7 @@ let n: i32 = 1 as 2;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/as/identity.carbon b/toolchain/check/testdata/as/identity.carbon
index 4a9b5ea45b22..191a0ae50cba 100644
--- a/toolchain/check/testdata/as/identity.carbon
+++ b/toolchain/check/testdata/as/identity.carbon
@@ -50,14 +50,7 @@ fn Initializing() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/as/overloaded.carbon b/toolchain/check/testdata/as/overloaded.carbon
index dd111e2bfb53..08b5c5dafd6a 100644
--- a/toolchain/check/testdata/as/overloaded.carbon
+++ b/toolchain/check/testdata/as/overloaded.carbon
@@ -70,14 +70,7 @@ let n: i32 = ((4 as i32) as X) as i32;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .As = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %As.type.1 = import_ref Core//prelude/operators/as, inst+7, loaded [template = constants.%As]
diff --git a/toolchain/check/testdata/basics/builtin_types.carbon b/toolchain/check/testdata/basics/builtin_types.carbon
index 353e15f50f26..bc02a5b3632d 100644
--- a/toolchain/check/testdata/basics/builtin_types.carbon
+++ b/toolchain/check/testdata/basics/builtin_types.carbon
@@ -33,14 +33,7 @@ var test_type: type = i32;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/basics/fail_bad_run.carbon b/toolchain/check/testdata/basics/fail_bad_run.carbon
index 8594408782ed..e80457f0937e 100644
--- a/toolchain/check/testdata/basics/fail_bad_run.carbon
+++ b/toolchain/check/testdata/basics/fail_bad_run.carbon
@@ -29,14 +29,7 @@ fn Run() -> String {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/basics/fail_bad_run_2.carbon b/toolchain/check/testdata/basics/fail_bad_run_2.carbon
index f2365e9f3a31..da52ce92a68c 100644
--- a/toolchain/check/testdata/basics/fail_bad_run_2.carbon
+++ b/toolchain/check/testdata/basics/fail_bad_run_2.carbon
@@ -27,14 +27,7 @@ fn Run(n: i32) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/basics/fail_non_type_as_type.carbon b/toolchain/check/testdata/basics/fail_non_type_as_type.carbon
index 4537565eb47d..7101d45d73ee 100644
--- a/toolchain/check/testdata/basics/fail_non_type_as_type.carbon
+++ b/toolchain/check/testdata/basics/fail_non_type_as_type.carbon
@@ -44,14 +44,7 @@ var x: type = 42;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/basics/fail_numeric_literal_overflow.carbon b/toolchain/check/testdata/basics/fail_numeric_literal_overflow.carbon
index ef2d393c79b4..1b88e09e605f 100644
--- a/toolchain/check/testdata/basics/fail_numeric_literal_overflow.carbon
+++ b/toolchain/check/testdata/basics/fail_numeric_literal_overflow.carbon
@@ -53,14 +53,7 @@ let e: f64 = 5.0e39999999999999999993;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/basics/fail_qualifier_unsupported.carbon b/toolchain/check/testdata/basics/fail_qualifier_unsupported.carbon
index 149b72f21446..d25f0768dfde 100644
--- a/toolchain/check/testdata/basics/fail_qualifier_unsupported.carbon
+++ b/toolchain/check/testdata/basics/fail_qualifier_unsupported.carbon
@@ -26,14 +26,7 @@ var y: i32 = x.b;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/basics/multifile.carbon b/toolchain/check/testdata/basics/multifile.carbon
index 0e37089ad685..801c3113adb9 100644
--- a/toolchain/check/testdata/basics/multifile.carbon
+++ b/toolchain/check/testdata/basics/multifile.carbon
@@ -29,14 +29,7 @@ fn B() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -65,14 +58,7 @@ fn B() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/basics/numeric_literals.carbon b/toolchain/check/testdata/basics/numeric_literals.carbon
index 03e400d249ec..2a424b7a8166 100644
--- a/toolchain/check/testdata/basics/numeric_literals.carbon
+++ b/toolchain/check/testdata/basics/numeric_literals.carbon
@@ -71,14 +71,7 @@ fn F() {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/basics/parens.carbon b/toolchain/check/testdata/basics/parens.carbon
index 61125c9f7d8c..fd83a37e18a0 100644
--- a/toolchain/check/testdata/basics/parens.carbon
+++ b/toolchain/check/testdata/basics/parens.carbon
@@ -25,14 +25,7 @@ var b: i32 = ((2));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/basics/run.carbon b/toolchain/check/testdata/basics/run.carbon
index 1f61027a2d95..c54590552ba1 100644
--- a/toolchain/check/testdata/basics/run.carbon
+++ b/toolchain/check/testdata/basics/run.carbon
@@ -21,14 +21,7 @@ fn Run() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/basics/run_i32.carbon b/toolchain/check/testdata/basics/run_i32.carbon
index 04c2ea8bddab..130317383b1c 100644
--- a/toolchain/check/testdata/basics/run_i32.carbon
+++ b/toolchain/check/testdata/basics/run_i32.carbon
@@ -25,14 +25,7 @@ fn Run() -> i32 { return 0; }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/basics/type_literals.carbon b/toolchain/check/testdata/basics/type_literals.carbon
index 7d72cc9d5868..6dbb32fbe8d4 100644
--- a/toolchain/check/testdata/basics/type_literals.carbon
+++ b/toolchain/check/testdata/basics/type_literals.carbon
@@ -145,14 +145,7 @@ var test_f128: f128;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int.type = import_ref Core//prelude/types, inst+30, loaded [template = constants.%Int]
 // CHECK:STDOUT: }
@@ -222,14 +215,7 @@ var test_f128: f128;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .UInt = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %UInt.type = import_ref Core//prelude/types, inst+45, loaded [template = constants.%UInt]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/big_int/make_type.carbon b/toolchain/check/testdata/builtins/big_int/make_type.carbon
index d28fea742add..859153deef0c 100644
--- a/toolchain/check/testdata/builtins/big_int/make_type.carbon
+++ b/toolchain/check/testdata/builtins/big_int/make_type.carbon
@@ -33,14 +33,7 @@ var i: BigInt();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -73,14 +66,7 @@ var i: BigInt();
 // CHECK:STDOUT:   %import_ref: %BigInt.type = import_ref Main//types, inst+7, loaded [template = constants.%BigInt]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/builtins/bool/make_type.carbon b/toolchain/check/testdata/builtins/bool/make_type.carbon
index 0f96a41f36ac..f06e3f2f2996 100644
--- a/toolchain/check/testdata/builtins/bool/make_type.carbon
+++ b/toolchain/check/testdata/builtins/bool/make_type.carbon
@@ -33,14 +33,7 @@ var b: Bool() = false;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -74,14 +67,7 @@ var b: Bool() = false;
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Main//types, inst+7, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/builtins/float/add.carbon b/toolchain/check/testdata/builtins/float/add.carbon
index 1c0f625aa2c4..6e84ac218721 100644
--- a/toolchain/check/testdata/builtins/float/add.carbon
+++ b/toolchain/check/testdata/builtins/float/add.carbon
@@ -70,14 +70,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Float = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT: }
@@ -207,14 +200,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/div.carbon b/toolchain/check/testdata/builtins/float/div.carbon
index 6abdc3856c5c..dc39b64c0f1d 100644
--- a/toolchain/check/testdata/builtins/float/div.carbon
+++ b/toolchain/check/testdata/builtins/float/div.carbon
@@ -76,14 +76,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Float = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT: }
@@ -237,14 +230,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/eq.carbon b/toolchain/check/testdata/builtins/float/eq.carbon
index 00b388fa17d1..dd8bc5f1f52d 100644
--- a/toolchain/check/testdata/builtins/float/eq.carbon
+++ b/toolchain/check/testdata/builtins/float/eq.carbon
@@ -64,14 +64,7 @@ fn WrongResult(a: f64, b: f64) -> f64 = "float.eq";
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -245,14 +238,7 @@ fn WrongResult(a: f64, b: f64) -> f64 = "float.eq";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Float = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/float/greater.carbon b/toolchain/check/testdata/builtins/float/greater.carbon
index 50e00d7a5fca..015e85d63282 100644
--- a/toolchain/check/testdata/builtins/float/greater.carbon
+++ b/toolchain/check/testdata/builtins/float/greater.carbon
@@ -63,14 +63,7 @@ fn RuntimeCall(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/greater_eq.carbon b/toolchain/check/testdata/builtins/float/greater_eq.carbon
index 84a446300219..101d1713ac37 100644
--- a/toolchain/check/testdata/builtins/float/greater_eq.carbon
+++ b/toolchain/check/testdata/builtins/float/greater_eq.carbon
@@ -63,14 +63,7 @@ fn RuntimeCall(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/less.carbon b/toolchain/check/testdata/builtins/float/less.carbon
index 22eec2cd2c70..dd8a11b013cd 100644
--- a/toolchain/check/testdata/builtins/float/less.carbon
+++ b/toolchain/check/testdata/builtins/float/less.carbon
@@ -63,14 +63,7 @@ fn RuntimeCall(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/less_eq.carbon b/toolchain/check/testdata/builtins/float/less_eq.carbon
index a8cb49eb4063..5549b485a38d 100644
--- a/toolchain/check/testdata/builtins/float/less_eq.carbon
+++ b/toolchain/check/testdata/builtins/float/less_eq.carbon
@@ -63,14 +63,7 @@ fn RuntimeCall(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/make_type.carbon b/toolchain/check/testdata/builtins/float/make_type.carbon
index 9a81010cb7a4..160087390ecb 100644
--- a/toolchain/check/testdata/builtins/float/make_type.carbon
+++ b/toolchain/check/testdata/builtins/float/make_type.carbon
@@ -58,14 +58,7 @@ var dyn: Float(dyn_size);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -115,14 +108,7 @@ var dyn: Float(dyn_size);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -197,14 +183,7 @@ var dyn: Float(dyn_size);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/float/mul.carbon b/toolchain/check/testdata/builtins/float/mul.carbon
index 3a8738327064..52765bace3fc 100644
--- a/toolchain/check/testdata/builtins/float/mul.carbon
+++ b/toolchain/check/testdata/builtins/float/mul.carbon
@@ -70,14 +70,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Float = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT: }
@@ -207,14 +200,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/negate.carbon b/toolchain/check/testdata/builtins/float/negate.carbon
index 7ebd932f6f0f..6c61ff5214f7 100644
--- a/toolchain/check/testdata/builtins/float/negate.carbon
+++ b/toolchain/check/testdata/builtins/float/negate.carbon
@@ -90,14 +90,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Float = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT: }
@@ -217,14 +210,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/float/neq.carbon b/toolchain/check/testdata/builtins/float/neq.carbon
index fc879eb94a19..2128f6769da0 100644
--- a/toolchain/check/testdata/builtins/float/neq.carbon
+++ b/toolchain/check/testdata/builtins/float/neq.carbon
@@ -64,14 +64,7 @@ fn WrongResult(a: f64, b: f64) -> f64 = "float.neq";
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -245,14 +238,7 @@ fn WrongResult(a: f64, b: f64) -> f64 = "float.neq";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Float = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/float/sub.carbon b/toolchain/check/testdata/builtins/float/sub.carbon
index c0f6e3bc5e37..ab84d2dfad39 100644
--- a/toolchain/check/testdata/builtins/float/sub.carbon
+++ b/toolchain/check/testdata/builtins/float/sub.carbon
@@ -70,14 +70,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Float = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT: }
@@ -207,14 +200,7 @@ fn RuntimeCallBadReturnType(a: f64, b: f64) -> bool {
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/int/and.carbon b/toolchain/check/testdata/builtins/int/and.carbon
index 89686369b772..27e9debeab38 100644
--- a/toolchain/check/testdata/builtins/int/and.carbon
+++ b/toolchain/check/testdata/builtins/int/and.carbon
@@ -40,14 +40,7 @@ fn RuntimeCall(a: i32, b: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/complement.carbon b/toolchain/check/testdata/builtins/int/complement.carbon
index 94df15896cb6..0d2e2c5780be 100644
--- a/toolchain/check/testdata/builtins/int/complement.carbon
+++ b/toolchain/check/testdata/builtins/int/complement.carbon
@@ -44,14 +44,7 @@ fn RuntimeCall(a: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/eq.carbon b/toolchain/check/testdata/builtins/int/eq.carbon
index 002a7853c6fa..40dc6a3a39bd 100644
--- a/toolchain/check/testdata/builtins/int/eq.carbon
+++ b/toolchain/check/testdata/builtins/int/eq.carbon
@@ -63,14 +63,7 @@ fn WrongResult(a: i32, b: i32) -> i32 = "int.eq";
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -239,14 +232,7 @@ fn WrongResult(a: i32, b: i32) -> i32 = "int.eq";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/greater.carbon b/toolchain/check/testdata/builtins/int/greater.carbon
index 55f21d111f25..f142946b7614 100644
--- a/toolchain/check/testdata/builtins/int/greater.carbon
+++ b/toolchain/check/testdata/builtins/int/greater.carbon
@@ -62,14 +62,7 @@ fn RuntimeCall(a: i32, b: i32) -> bool {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/int/greater_eq.carbon b/toolchain/check/testdata/builtins/int/greater_eq.carbon
index 71c2814a79b9..36ea5b64733f 100644
--- a/toolchain/check/testdata/builtins/int/greater_eq.carbon
+++ b/toolchain/check/testdata/builtins/int/greater_eq.carbon
@@ -62,14 +62,7 @@ fn RuntimeCall(a: i32, b: i32) -> bool {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/int/left_shift.carbon b/toolchain/check/testdata/builtins/int/left_shift.carbon
index efba95cd6144..9da60f0c38b0 100644
--- a/toolchain/check/testdata/builtins/int/left_shift.carbon
+++ b/toolchain/check/testdata/builtins/int/left_shift.carbon
@@ -84,14 +84,7 @@ let negative: i32 = LeftShift(1, Negate(1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -218,14 +211,7 @@ let negative: i32 = LeftShift(1, Negate(1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/less.carbon b/toolchain/check/testdata/builtins/int/less.carbon
index 492f887c039f..6fa13b603a55 100644
--- a/toolchain/check/testdata/builtins/int/less.carbon
+++ b/toolchain/check/testdata/builtins/int/less.carbon
@@ -62,14 +62,7 @@ fn RuntimeCall(a: i32, b: i32) -> bool {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/int/less_eq.carbon b/toolchain/check/testdata/builtins/int/less_eq.carbon
index 3fe6b10ad523..cbe8db04bdce 100644
--- a/toolchain/check/testdata/builtins/int/less_eq.carbon
+++ b/toolchain/check/testdata/builtins/int/less_eq.carbon
@@ -62,14 +62,7 @@ fn RuntimeCall(a: i32, b: i32) -> bool {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/int/make_type_32.carbon b/toolchain/check/testdata/builtins/int/make_type_32.carbon
index 7fd15b52c34f..cceb18743102 100644
--- a/toolchain/check/testdata/builtins/int/make_type_32.carbon
+++ b/toolchain/check/testdata/builtins/int/make_type_32.carbon
@@ -33,14 +33,7 @@ var i: Int() = 0;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -74,14 +67,7 @@ var i: Int() = 0;
 // CHECK:STDOUT:   %import_ref: %Int.type = import_ref Main//types, inst+7, loaded [template = constants.%Int]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/builtins/int/make_type_signed.carbon b/toolchain/check/testdata/builtins/int/make_type_signed.carbon
index 7b3b6dbdf800..0b61ba86fe1f 100644
--- a/toolchain/check/testdata/builtins/int/make_type_signed.carbon
+++ b/toolchain/check/testdata/builtins/int/make_type_signed.carbon
@@ -83,14 +83,7 @@ var m: Int(1000000000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -149,14 +142,7 @@ var m: Int(1000000000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -292,14 +278,7 @@ var m: Int(1000000000);
 // CHECK:STDOUT:   %import_ref: %Int.type = import_ref Main//types, inst+22, loaded [template = constants.%Int]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -341,14 +320,7 @@ var m: Int(1000000000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -411,14 +383,7 @@ var m: Int(1000000000);
 // CHECK:STDOUT:   %import_ref: %Int.type = import_ref Main//types, inst+22, loaded [template = constants.%Int]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/builtins/int/make_type_unsigned.carbon b/toolchain/check/testdata/builtins/int/make_type_unsigned.carbon
index 33c441c23d87..b768958f6de9 100644
--- a/toolchain/check/testdata/builtins/int/make_type_unsigned.carbon
+++ b/toolchain/check/testdata/builtins/int/make_type_unsigned.carbon
@@ -83,14 +83,7 @@ var m: UInt(1000000000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -149,14 +142,7 @@ var m: UInt(1000000000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -292,14 +278,7 @@ var m: UInt(1000000000);
 // CHECK:STDOUT:   %import_ref: %UInt.type = import_ref Main//types, inst+22, loaded [template = constants.%UInt]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -341,14 +320,7 @@ var m: UInt(1000000000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -411,14 +383,7 @@ var m: UInt(1000000000);
 // CHECK:STDOUT:   %import_ref: %UInt.type = import_ref Main//types, inst+22, loaded [template = constants.%UInt]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/builtins/int/neq.carbon b/toolchain/check/testdata/builtins/int/neq.carbon
index 5eb4dfa29ead..b34aed462a0c 100644
--- a/toolchain/check/testdata/builtins/int/neq.carbon
+++ b/toolchain/check/testdata/builtins/int/neq.carbon
@@ -54,14 +54,7 @@ fn RuntimeCall(a: i32, b: i32) -> bool {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/builtins/int/or.carbon b/toolchain/check/testdata/builtins/int/or.carbon
index 2d9edfd00dd4..01d3caff54a6 100644
--- a/toolchain/check/testdata/builtins/int/or.carbon
+++ b/toolchain/check/testdata/builtins/int/or.carbon
@@ -40,14 +40,7 @@ fn RuntimeCall(a: i32, b: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/right_shift.carbon b/toolchain/check/testdata/builtins/int/right_shift.carbon
index 7f05167f3a4d..17c89f6f06a1 100644
--- a/toolchain/check/testdata/builtins/int/right_shift.carbon
+++ b/toolchain/check/testdata/builtins/int/right_shift.carbon
@@ -85,14 +85,7 @@ let negative: i32 = RightShift(1, Negate(1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -222,14 +215,7 @@ let negative: i32 = RightShift(1, Negate(1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -375,14 +361,7 @@ let negative: i32 = RightShift(1, Negate(1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/sadd.carbon b/toolchain/check/testdata/builtins/int/sadd.carbon
index ae295cdd1783..97e5f76dafd6 100644
--- a/toolchain/check/testdata/builtins/int/sadd.carbon
+++ b/toolchain/check/testdata/builtins/int/sadd.carbon
@@ -110,14 +110,7 @@ let b: i32 = Add(0x7FFFFFFF, 1);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -252,14 +245,7 @@ let b: i32 = Add(0x7FFFFFFF, 1);
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -545,14 +531,7 @@ let b: i32 = Add(0x7FFFFFFF, 1);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/sdiv.carbon b/toolchain/check/testdata/builtins/int/sdiv.carbon
index a3eeabd7453f..4b6154198ed8 100644
--- a/toolchain/check/testdata/builtins/int/sdiv.carbon
+++ b/toolchain/check/testdata/builtins/int/sdiv.carbon
@@ -78,14 +78,7 @@ let b: i32 = Div(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -211,14 +204,7 @@ let b: i32 = Div(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -390,14 +376,7 @@ let b: i32 = Div(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/smod.carbon b/toolchain/check/testdata/builtins/int/smod.carbon
index 3744a3a27b5d..7abb04ebffa0 100644
--- a/toolchain/check/testdata/builtins/int/smod.carbon
+++ b/toolchain/check/testdata/builtins/int/smod.carbon
@@ -81,14 +81,7 @@ let b: i32 = Mod(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -215,14 +208,7 @@ let b: i32 = Mod(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -394,14 +380,7 @@ let b: i32 = Mod(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/smul.carbon b/toolchain/check/testdata/builtins/int/smul.carbon
index 692871c1036e..adf26966ed31 100644
--- a/toolchain/check/testdata/builtins/int/smul.carbon
+++ b/toolchain/check/testdata/builtins/int/smul.carbon
@@ -52,14 +52,7 @@ let b: i32 = Mul(0x8000, 0x10000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -181,14 +174,7 @@ let b: i32 = Mul(0x8000, 0x10000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/snegate.carbon b/toolchain/check/testdata/builtins/int/snegate.carbon
index 4ff6d8ec21ab..58a8b43ab920 100644
--- a/toolchain/check/testdata/builtins/int/snegate.carbon
+++ b/toolchain/check/testdata/builtins/int/snegate.carbon
@@ -138,14 +138,7 @@ let b: i32 = Negate(Sub(Negate(0x7FFFFFFF), 1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -284,14 +277,7 @@ let b: i32 = Negate(Sub(Negate(0x7FFFFFFF), 1));
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -538,14 +524,7 @@ let b: i32 = Negate(Sub(Negate(0x7FFFFFFF), 1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/ssub.carbon b/toolchain/check/testdata/builtins/int/ssub.carbon
index eef053492b34..3c780e4e851e 100644
--- a/toolchain/check/testdata/builtins/int/ssub.carbon
+++ b/toolchain/check/testdata/builtins/int/ssub.carbon
@@ -53,14 +53,7 @@ let c: i32 = Sub(Sub(0, 0x7FFFFFFF), 2);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -183,14 +176,7 @@ let c: i32 = Sub(Sub(0, 0x7FFFFFFF), 2);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/uadd.carbon b/toolchain/check/testdata/builtins/int/uadd.carbon
index d31693dd12f1..596b989bf12c 100644
--- a/toolchain/check/testdata/builtins/int/uadd.carbon
+++ b/toolchain/check/testdata/builtins/int/uadd.carbon
@@ -107,14 +107,7 @@ let b: i32 = Add(0x7FFFFFFF, 1);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -249,14 +242,7 @@ let b: i32 = Add(0x7FFFFFFF, 1);
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -542,14 +528,7 @@ let b: i32 = Add(0x7FFFFFFF, 1);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/udiv.carbon b/toolchain/check/testdata/builtins/int/udiv.carbon
index 3b287a8ad977..d1d615ebfa3f 100644
--- a/toolchain/check/testdata/builtins/int/udiv.carbon
+++ b/toolchain/check/testdata/builtins/int/udiv.carbon
@@ -74,14 +74,7 @@ let b: i32 = Div(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -208,14 +201,7 @@ let b: i32 = Div(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -387,14 +373,7 @@ let b: i32 = Div(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/umod.carbon b/toolchain/check/testdata/builtins/int/umod.carbon
index ca6d95694fcd..ee07f6a9a3c1 100644
--- a/toolchain/check/testdata/builtins/int/umod.carbon
+++ b/toolchain/check/testdata/builtins/int/umod.carbon
@@ -76,14 +76,7 @@ let b: i32 = Mod(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -210,14 +203,7 @@ let b: i32 = Mod(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -389,14 +375,7 @@ let b: i32 = Mod(0, 0);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/umul.carbon b/toolchain/check/testdata/builtins/int/umul.carbon
index 0394d5830df1..173277a08983 100644
--- a/toolchain/check/testdata/builtins/int/umul.carbon
+++ b/toolchain/check/testdata/builtins/int/umul.carbon
@@ -49,14 +49,7 @@ let b: i32 = Mul(0x8000, 0x10000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -178,14 +171,7 @@ let b: i32 = Mul(0x8000, 0x10000);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/unegate.carbon b/toolchain/check/testdata/builtins/int/unegate.carbon
index 9efa74afb789..3cb40f86851b 100644
--- a/toolchain/check/testdata/builtins/int/unegate.carbon
+++ b/toolchain/check/testdata/builtins/int/unegate.carbon
@@ -134,14 +134,7 @@ let b: i32 = Negate(Sub(Negate(0x7FFFFFFF), 1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -280,14 +273,7 @@ let b: i32 = Negate(Sub(Negate(0x7FFFFFFF), 1));
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -534,14 +520,7 @@ let b: i32 = Negate(Sub(Negate(0x7FFFFFFF), 1));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/usub.carbon b/toolchain/check/testdata/builtins/int/usub.carbon
index 8555026d26f7..330109ace4fd 100644
--- a/toolchain/check/testdata/builtins/int/usub.carbon
+++ b/toolchain/check/testdata/builtins/int/usub.carbon
@@ -50,14 +50,7 @@ let c: i32 = Sub(Sub(0, 0x7FFFFFFF), 2);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -180,14 +173,7 @@ let c: i32 = Sub(Sub(0, 0x7FFFFFFF), 2);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/int/xor.carbon b/toolchain/check/testdata/builtins/int/xor.carbon
index 4e17a7fbf663..6ec65b505f18 100644
--- a/toolchain/check/testdata/builtins/int/xor.carbon
+++ b/toolchain/check/testdata/builtins/int/xor.carbon
@@ -40,14 +40,7 @@ fn RuntimeCall(a: i32, b: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/builtins/print.carbon b/toolchain/check/testdata/builtins/print.carbon
index c5b5650738d2..ee3460e4aa25 100644
--- a/toolchain/check/testdata/builtins/print.carbon
+++ b/toolchain/check/testdata/builtins/print.carbon
@@ -37,14 +37,7 @@ fn Main() {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Print = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Print.type.2 = import_ref Core//prelude, inst+51, loaded [template = constants.%Print.2]
diff --git a/toolchain/check/testdata/class/access_modifers.carbon b/toolchain/check/testdata/class/access_modifers.carbon
index b000fd5bb9cb..6de8890350b6 100644
--- a/toolchain/check/testdata/class/access_modifers.carbon
+++ b/toolchain/check/testdata/class/access_modifers.carbon
@@ -171,14 +171,7 @@ class A {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -297,14 +290,7 @@ class A {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -369,14 +355,7 @@ class A {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -489,14 +468,7 @@ class A {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -554,14 +526,7 @@ class A {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -632,14 +597,7 @@ class A {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/adapt.carbon b/toolchain/check/testdata/class/adapt.carbon
index b57b47c265da..4f88561e1798 100644
--- a/toolchain/check/testdata/class/adapt.carbon
+++ b/toolchain/check/testdata/class/adapt.carbon
@@ -65,14 +65,7 @@ fn F(a: AdaptNotExtend) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -152,14 +145,7 @@ fn F(a: AdaptNotExtend) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/base.carbon b/toolchain/check/testdata/class/base.carbon
index 09b7bda8aac4..3adb11e74011 100644
--- a/toolchain/check/testdata/class/base.carbon
+++ b/toolchain/check/testdata/class/base.carbon
@@ -63,14 +63,7 @@ fn Access(d: Derived) -> (i32, i32) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/base_field.carbon b/toolchain/check/testdata/class/base_field.carbon
index 423403bee33c..762160b69d81 100644
--- a/toolchain/check/testdata/class/base_field.carbon
+++ b/toolchain/check/testdata/class/base_field.carbon
@@ -54,14 +54,7 @@ fn Access(p: Derived*) -> i32* {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/base_function_unqualified.carbon b/toolchain/check/testdata/class/base_function_unqualified.carbon
index 765cc37498ff..46d8f61b928f 100644
--- a/toolchain/check/testdata/class/base_function_unqualified.carbon
+++ b/toolchain/check/testdata/class/base_function_unqualified.carbon
@@ -46,14 +46,7 @@ fn Derived.H() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/base_method.carbon b/toolchain/check/testdata/class/base_method.carbon
index aaed85c10b3c..396840e475aa 100644
--- a/toolchain/check/testdata/class/base_method.carbon
+++ b/toolchain/check/testdata/class/base_method.carbon
@@ -56,14 +56,7 @@ fn Call(p: Derived*) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/base_method_qualified.carbon b/toolchain/check/testdata/class/base_method_qualified.carbon
index b72c99c832a4..f049cefa83dd 100644
--- a/toolchain/check/testdata/class/base_method_qualified.carbon
+++ b/toolchain/check/testdata/class/base_method_qualified.carbon
@@ -77,14 +77,7 @@ fn PassDerivedToBaseIndirect(p: Derived*) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/base_method_shadow.carbon b/toolchain/check/testdata/class/base_method_shadow.carbon
index 08f252fb5d3e..d5b3f5605cc4 100644
--- a/toolchain/check/testdata/class/base_method_shadow.carbon
+++ b/toolchain/check/testdata/class/base_method_shadow.carbon
@@ -72,14 +72,7 @@ fn Call(a: A*, b: B*, c: C*, d: D*) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/basic.carbon b/toolchain/check/testdata/class/basic.carbon
index b4c34bd4d9c2..6edba97800c9 100644
--- a/toolchain/check/testdata/class/basic.carbon
+++ b/toolchain/check/testdata/class/basic.carbon
@@ -50,14 +50,7 @@ fn Run() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/complete_in_member_fn.carbon b/toolchain/check/testdata/class/complete_in_member_fn.carbon
index 5c79f1a21266..cba578cfa424 100644
--- a/toolchain/check/testdata/class/complete_in_member_fn.carbon
+++ b/toolchain/check/testdata/class/complete_in_member_fn.carbon
@@ -33,14 +33,7 @@ class C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/compound_field.carbon b/toolchain/check/testdata/class/compound_field.carbon
index 4dd135e439b1..01084b9a3ce6 100644
--- a/toolchain/check/testdata/class/compound_field.carbon
+++ b/toolchain/check/testdata/class/compound_field.carbon
@@ -72,14 +72,7 @@ fn AccessBaseIndirect(p: Derived*) -> i32* {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/cross_package_import.carbon b/toolchain/check/testdata/class/cross_package_import.carbon
index 40cdba5e1043..7e5bfd507307 100644
--- a/toolchain/check/testdata/class/cross_package_import.carbon
+++ b/toolchain/check/testdata/class/cross_package_import.carbon
@@ -110,14 +110,7 @@ var c: Other.C = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -146,14 +139,7 @@ var c: Other.C = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -179,14 +165,7 @@ var c: Other.C = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -218,14 +197,7 @@ var c: Other.C = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Other: <namespace> = namespace file.%Other.import, [template] {
 // CHECK:STDOUT:     .C = %import_ref.1
@@ -273,14 +245,7 @@ var c: Other.C = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Other: <namespace> = namespace file.%Other.import, [template] {
 // CHECK:STDOUT:     .C = %import_ref
@@ -326,14 +291,7 @@ var c: Other.C = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Other: <namespace> = namespace file.%Other.import, [template] {
 // CHECK:STDOUT:     .C = %import_ref.1
@@ -387,14 +345,7 @@ var c: Other.C = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Other: <namespace> = namespace file.%Other.import, [template] {
 // CHECK:STDOUT:     .C = %import_ref.1
diff --git a/toolchain/check/testdata/class/derived_to_base.carbon b/toolchain/check/testdata/class/derived_to_base.carbon
index d8a682982752..90529de4c9c3 100644
--- a/toolchain/check/testdata/class/derived_to_base.carbon
+++ b/toolchain/check/testdata/class/derived_to_base.carbon
@@ -94,14 +94,7 @@ fn ConvertInit() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/extend_adapt.carbon b/toolchain/check/testdata/class/extend_adapt.carbon
index d60fe53df186..548b8abe44d2 100644
--- a/toolchain/check/testdata/class/extend_adapt.carbon
+++ b/toolchain/check/testdata/class/extend_adapt.carbon
@@ -123,14 +123,7 @@ class StructAdapter {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -263,14 +256,7 @@ class StructAdapter {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -442,14 +428,7 @@ class StructAdapter {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
@@ -606,14 +585,7 @@ class StructAdapter {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_abstract.carbon b/toolchain/check/testdata/class/fail_abstract.carbon
index daf7f038c988..cff528a65249 100644
--- a/toolchain/check/testdata/class/fail_abstract.carbon
+++ b/toolchain/check/testdata/class/fail_abstract.carbon
@@ -202,14 +202,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -256,14 +249,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -308,14 +294,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -366,14 +345,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -421,14 +393,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -506,14 +471,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -595,14 +553,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -690,14 +641,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -782,14 +726,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -836,14 +773,7 @@ fn CallReturnAbstract() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_adapt_bad_decl.carbon b/toolchain/check/testdata/class/fail_adapt_bad_decl.carbon
index 377c5f73945d..ad449d68bc16 100644
--- a/toolchain/check/testdata/class/fail_adapt_bad_decl.carbon
+++ b/toolchain/check/testdata/class/fail_adapt_bad_decl.carbon
@@ -133,14 +133,7 @@ class C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -281,14 +274,7 @@ class C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -412,14 +398,7 @@ class C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -471,14 +450,7 @@ class C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_adapt_bad_type.carbon b/toolchain/check/testdata/class/fail_adapt_bad_type.carbon
index 9d389cf2ec72..f883cf736b72 100644
--- a/toolchain/check/testdata/class/fail_adapt_bad_type.carbon
+++ b/toolchain/check/testdata/class/fail_adapt_bad_type.carbon
@@ -34,14 +34,7 @@ class AdaptIncomplete {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_adapt_modifiers.carbon b/toolchain/check/testdata/class/fail_adapt_modifiers.carbon
index 4b9e32ade20e..bf4f1e194dc0 100644
--- a/toolchain/check/testdata/class/fail_adapt_modifiers.carbon
+++ b/toolchain/check/testdata/class/fail_adapt_modifiers.carbon
@@ -74,14 +74,7 @@ class C5 {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_adapt_with_base.carbon b/toolchain/check/testdata/class/fail_adapt_with_base.carbon
index 2c4c8ea32edd..4955c9aa3f0d 100644
--- a/toolchain/check/testdata/class/fail_adapt_with_base.carbon
+++ b/toolchain/check/testdata/class/fail_adapt_with_base.carbon
@@ -35,14 +35,7 @@ base class AdaptWithVirtual {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_adapt_with_subobjects.carbon b/toolchain/check/testdata/class/fail_adapt_with_subobjects.carbon
index d491ad8aff38..d4b00b1e9377 100644
--- a/toolchain/check/testdata/class/fail_adapt_with_subobjects.carbon
+++ b/toolchain/check/testdata/class/fail_adapt_with_subobjects.carbon
@@ -92,14 +92,7 @@ class AdaptWithBaseAndFields {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -154,14 +147,7 @@ class AdaptWithBaseAndFields {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -238,14 +224,7 @@ class AdaptWithBaseAndFields {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_addr_not_self.carbon b/toolchain/check/testdata/class/fail_addr_not_self.carbon
index 7a3ac2f4d2c2..b04f1d86a314 100644
--- a/toolchain/check/testdata/class/fail_addr_not_self.carbon
+++ b/toolchain/check/testdata/class/fail_addr_not_self.carbon
@@ -40,14 +40,7 @@ class Class {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_addr_self.carbon b/toolchain/check/testdata/class/fail_addr_self.carbon
index 051b7018a62b..844b68da7321 100644
--- a/toolchain/check/testdata/class/fail_addr_self.carbon
+++ b/toolchain/check/testdata/class/fail_addr_self.carbon
@@ -54,14 +54,7 @@ fn F(c: Class, p: Class*) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_base_bad_type.carbon b/toolchain/check/testdata/class/fail_base_bad_type.carbon
index 4209671b0434..d0079a28823b 100644
--- a/toolchain/check/testdata/class/fail_base_bad_type.carbon
+++ b/toolchain/check/testdata/class/fail_base_bad_type.carbon
@@ -194,14 +194,7 @@ fn AccessMemberWithInvalidBaseFinal_NoMember(p: DeriveFromFinal*) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -288,14 +281,7 @@ fn AccessMemberWithInvalidBaseFinal_NoMember(p: DeriveFromFinal*) -> i32 {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -456,14 +442,7 @@ fn AccessMemberWithInvalidBaseFinal_NoMember(p: DeriveFromFinal*) -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
@@ -657,14 +636,7 @@ fn AccessMemberWithInvalidBaseFinal_NoMember(p: DeriveFromFinal*) -> i32 {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -861,14 +833,7 @@ fn AccessMemberWithInvalidBaseFinal_NoMember(p: DeriveFromFinal*) -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
@@ -1064,14 +1029,7 @@ fn AccessMemberWithInvalidBaseFinal_NoMember(p: DeriveFromFinal*) -> i32 {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -1252,14 +1210,7 @@ fn AccessMemberWithInvalidBaseFinal_NoMember(p: DeriveFromFinal*) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_base_method_define.carbon b/toolchain/check/testdata/class/fail_base_method_define.carbon
index 0367248ba071..5f6858048d54 100644
--- a/toolchain/check/testdata/class/fail_base_method_define.carbon
+++ b/toolchain/check/testdata/class/fail_base_method_define.carbon
@@ -57,14 +57,7 @@ fn D.C.F() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_base_modifiers.carbon b/toolchain/check/testdata/class/fail_base_modifiers.carbon
index 2652f8404e59..f4e5b10c6b86 100644
--- a/toolchain/check/testdata/class/fail_base_modifiers.carbon
+++ b/toolchain/check/testdata/class/fail_base_modifiers.carbon
@@ -74,14 +74,7 @@ class C4 {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_base_no_extend.carbon b/toolchain/check/testdata/class/fail_base_no_extend.carbon
index 46bd442732f0..0ff711bc94e7 100644
--- a/toolchain/check/testdata/class/fail_base_no_extend.carbon
+++ b/toolchain/check/testdata/class/fail_base_no_extend.carbon
@@ -34,14 +34,7 @@ class C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_base_repeated.carbon b/toolchain/check/testdata/class/fail_base_repeated.carbon
index a96d64196a14..feb6a5b590ce 100644
--- a/toolchain/check/testdata/class/fail_base_repeated.carbon
+++ b/toolchain/check/testdata/class/fail_base_repeated.carbon
@@ -55,14 +55,7 @@ class D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_base_unbound.carbon b/toolchain/check/testdata/class/fail_base_unbound.carbon
index eaa170e32634..cddf67b0c2b9 100644
--- a/toolchain/check/testdata/class/fail_base_unbound.carbon
+++ b/toolchain/check/testdata/class/fail_base_unbound.carbon
@@ -38,14 +38,7 @@ let b: B = C.base;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_compound_type_mismatch.carbon b/toolchain/check/testdata/class/fail_compound_type_mismatch.carbon
index f171e97decf5..c80b1225aed7 100644
--- a/toolchain/check/testdata/class/fail_compound_type_mismatch.carbon
+++ b/toolchain/check/testdata/class/fail_compound_type_mismatch.carbon
@@ -68,14 +68,7 @@ fn AccessBInA(a: A) -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/class/fail_convert_to_invalid.carbon b/toolchain/check/testdata/class/fail_convert_to_invalid.carbon
index 39cd5f86e4f9..e17824301ae9 100644
--- a/toolchain/check/testdata/class/fail_convert_to_invalid.carbon
+++ b/toolchain/check/testdata/class/fail_convert_to_invalid.carbon
@@ -33,14 +33,7 @@ fn Make() -> C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_derived_to_base.carbon b/toolchain/check/testdata/class/fail_derived_to_base.carbon
index 53713318c61a..1aef81d0a60a 100644
--- a/toolchain/check/testdata/class/fail_derived_to_base.carbon
+++ b/toolchain/check/testdata/class/fail_derived_to_base.carbon
@@ -99,14 +99,7 @@ fn ConvertIncomplete(p: Incomplete*) -> A2* { return p; }
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/class/fail_extend_cycle.carbon b/toolchain/check/testdata/class/fail_extend_cycle.carbon
index 1d0d177e9468..547577439d91 100644
--- a/toolchain/check/testdata/class/fail_extend_cycle.carbon
+++ b/toolchain/check/testdata/class/fail_extend_cycle.carbon
@@ -50,14 +50,7 @@ base class A {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_field_modifiers.carbon b/toolchain/check/testdata/class/fail_field_modifiers.carbon
index 2b77fa82e36b..248aed96d5c8 100644
--- a/toolchain/check/testdata/class/fail_field_modifiers.carbon
+++ b/toolchain/check/testdata/class/fail_field_modifiers.carbon
@@ -52,14 +52,7 @@ class Class {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_generic_method.carbon b/toolchain/check/testdata/class/fail_generic_method.carbon
index 500c210945f5..7c7d617d6d02 100644
--- a/toolchain/check/testdata/class/fail_generic_method.carbon
+++ b/toolchain/check/testdata/class/fail_generic_method.carbon
@@ -57,14 +57,7 @@ fn Class(N:! i32).F[self: Self](n: T) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_import_misuses.carbon b/toolchain/check/testdata/class/fail_import_misuses.carbon
index e7876fd228fb..f7e16f4bbc8e 100644
--- a/toolchain/check/testdata/class/fail_import_misuses.carbon
+++ b/toolchain/check/testdata/class/fail_import_misuses.carbon
@@ -55,14 +55,7 @@ var a: Incomplete;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -101,14 +94,7 @@ var a: Incomplete;
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Main//a, inst+8, loaded [template = constants.%Incomplete]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.3 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_incomplete.carbon b/toolchain/check/testdata/class/fail_incomplete.carbon
index c42c60c238f3..68786dc02521 100644
--- a/toolchain/check/testdata/class/fail_incomplete.carbon
+++ b/toolchain/check/testdata/class/fail_incomplete.carbon
@@ -191,14 +191,7 @@ class C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -401,14 +394,7 @@ class C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_init.carbon b/toolchain/check/testdata/class/fail_init.carbon
index 261e070724a7..c2c602e28873 100644
--- a/toolchain/check/testdata/class/fail_init.carbon
+++ b/toolchain/check/testdata/class/fail_init.carbon
@@ -55,14 +55,7 @@ fn F() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_init_as_inplace.carbon b/toolchain/check/testdata/class/fail_init_as_inplace.carbon
index d95f6081e546..12698aef3fc5 100644
--- a/toolchain/check/testdata/class/fail_init_as_inplace.carbon
+++ b/toolchain/check/testdata/class/fail_init_as_inplace.carbon
@@ -51,14 +51,7 @@ fn F() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_memaccess_category.carbon b/toolchain/check/testdata/class/fail_memaccess_category.carbon
index 543b81526dd6..76e93ec405b9 100644
--- a/toolchain/check/testdata/class/fail_memaccess_category.carbon
+++ b/toolchain/check/testdata/class/fail_memaccess_category.carbon
@@ -62,14 +62,7 @@ fn F(s: {.a: A}, b: B) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_member_of_let.carbon b/toolchain/check/testdata/class/fail_member_of_let.carbon
index 125c5bc30991..1119d30a6823 100644
--- a/toolchain/check/testdata/class/fail_member_of_let.carbon
+++ b/toolchain/check/testdata/class/fail_member_of_let.carbon
@@ -44,14 +44,7 @@ fn T.F() {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_method.carbon b/toolchain/check/testdata/class/fail_method.carbon
index fb55f3d8eee7..5358b917e382 100644
--- a/toolchain/check/testdata/class/fail_method.carbon
+++ b/toolchain/check/testdata/class/fail_method.carbon
@@ -65,14 +65,7 @@ fn F(c: Class) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_method_modifiers.carbon b/toolchain/check/testdata/class/fail_method_modifiers.carbon
index 84d7ce2184ac..47fa74500f78 100644
--- a/toolchain/check/testdata/class/fail_method_modifiers.carbon
+++ b/toolchain/check/testdata/class/fail_method_modifiers.carbon
@@ -79,14 +79,7 @@ base class BaseClass {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_method_redefinition.carbon b/toolchain/check/testdata/class/fail_method_redefinition.carbon
index e451b80810e3..e09e66c2a7a3 100644
--- a/toolchain/check/testdata/class/fail_method_redefinition.carbon
+++ b/toolchain/check/testdata/class/fail_method_redefinition.carbon
@@ -33,14 +33,7 @@ class Class {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_modifiers.carbon b/toolchain/check/testdata/class/fail_modifiers.carbon
index b47a68a9a7ca..c999debb0d31 100644
--- a/toolchain/check/testdata/class/fail_modifiers.carbon
+++ b/toolchain/check/testdata/class/fail_modifiers.carbon
@@ -123,14 +123,7 @@ fn AbstractWithDefinition.G() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_out_of_line_decl.carbon b/toolchain/check/testdata/class/fail_out_of_line_decl.carbon
index 63304989e206..e4f4b0ab0788 100644
--- a/toolchain/check/testdata/class/fail_out_of_line_decl.carbon
+++ b/toolchain/check/testdata/class/fail_out_of_line_decl.carbon
@@ -29,14 +29,7 @@ fn C.F() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_redeclaration_scope.carbon b/toolchain/check/testdata/class/fail_redeclaration_scope.carbon
index f51e532b1cc1..697d9fbee88e 100644
--- a/toolchain/check/testdata/class/fail_redeclaration_scope.carbon
+++ b/toolchain/check/testdata/class/fail_redeclaration_scope.carbon
@@ -42,14 +42,7 @@ class Y {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_redefinition.carbon b/toolchain/check/testdata/class/fail_redefinition.carbon
index cf342bc85063..50563556b20c 100644
--- a/toolchain/check/testdata/class/fail_redefinition.carbon
+++ b/toolchain/check/testdata/class/fail_redefinition.carbon
@@ -69,14 +69,7 @@ fn Class.I() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_scope.carbon b/toolchain/check/testdata/class/fail_scope.carbon
index d20a9513230c..562da7013aa5 100644
--- a/toolchain/check/testdata/class/fail_scope.carbon
+++ b/toolchain/check/testdata/class/fail_scope.carbon
@@ -41,14 +41,7 @@ fn G() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_self.carbon b/toolchain/check/testdata/class/fail_self.carbon
index 474995018db2..5084915f5e34 100644
--- a/toolchain/check/testdata/class/fail_self.carbon
+++ b/toolchain/check/testdata/class/fail_self.carbon
@@ -95,14 +95,7 @@ fn CallWrongSelf(ws: WrongSelf) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/class/fail_self_param.carbon b/toolchain/check/testdata/class/fail_self_param.carbon
index cf71151b8ad5..1396d7de4cec 100644
--- a/toolchain/check/testdata/class/fail_self_param.carbon
+++ b/toolchain/check/testdata/class/fail_self_param.carbon
@@ -31,14 +31,7 @@ var v: C(0);
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/fail_unbound_field.carbon b/toolchain/check/testdata/class/fail_unbound_field.carbon
index c606f75feefd..95291194926f 100644
--- a/toolchain/check/testdata/class/fail_unbound_field.carbon
+++ b/toolchain/check/testdata/class/fail_unbound_field.carbon
@@ -47,14 +47,7 @@ fn G() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/fail_unknown_member.carbon b/toolchain/check/testdata/class/fail_unknown_member.carbon
index ef78df85b2ef..2ec329ded6ea 100644
--- a/toolchain/check/testdata/class/fail_unknown_member.carbon
+++ b/toolchain/check/testdata/class/fail_unknown_member.carbon
@@ -39,14 +39,7 @@ fn G(c: Class) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/field_access.carbon b/toolchain/check/testdata/class/field_access.carbon
index 64f6589e1da4..a1f832fcd5cc 100644
--- a/toolchain/check/testdata/class/field_access.carbon
+++ b/toolchain/check/testdata/class/field_access.carbon
@@ -42,14 +42,7 @@ fn Run() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/field_access_in_value.carbon b/toolchain/check/testdata/class/field_access_in_value.carbon
index 13b0306f1c59..2ae084c64f82 100644
--- a/toolchain/check/testdata/class/field_access_in_value.carbon
+++ b/toolchain/check/testdata/class/field_access_in_value.carbon
@@ -43,14 +43,7 @@ fn Test() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/forward_declared.carbon b/toolchain/check/testdata/class/forward_declared.carbon
index 44707d6b367f..7ecb79faefb6 100644
--- a/toolchain/check/testdata/class/forward_declared.carbon
+++ b/toolchain/check/testdata/class/forward_declared.carbon
@@ -25,14 +25,7 @@ fn F(p: Class*) -> Class* { return p; }
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic.carbon b/toolchain/check/testdata/class/generic.carbon
index 6d516446990b..3c790bfb0fcc 100644
--- a/toolchain/check/testdata/class/generic.carbon
+++ b/toolchain/check/testdata/class/generic.carbon
@@ -22,14 +22,7 @@ class C[]();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/basic.carbon b/toolchain/check/testdata/class/generic/basic.carbon
index c6d6e4c1e400..18fc13f3e18b 100644
--- a/toolchain/check/testdata/class/generic/basic.carbon
+++ b/toolchain/check/testdata/class/generic/basic.carbon
@@ -51,14 +51,7 @@ class Declaration(T:! type);
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/call.carbon b/toolchain/check/testdata/class/generic/call.carbon
index 15584e2fbea3..57c4a1ef7077 100644
--- a/toolchain/check/testdata/class/generic/call.carbon
+++ b/toolchain/check/testdata/class/generic/call.carbon
@@ -112,14 +112,7 @@ class Outer(T:! type) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -229,14 +222,7 @@ class Outer(T:! type) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -320,14 +306,7 @@ class Outer(T:! type) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -430,14 +409,7 @@ class Outer(T:! type) {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
@@ -616,14 +588,7 @@ class Outer(T:! type) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/field.carbon b/toolchain/check/testdata/class/generic/field.carbon
index 967127df62d8..6c2102ec5d34 100644
--- a/toolchain/check/testdata/class/generic/field.carbon
+++ b/toolchain/check/testdata/class/generic/field.carbon
@@ -64,14 +64,7 @@ fn H(U:! type, c: Class(U)) -> U {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/generic/import.carbon b/toolchain/check/testdata/class/generic/import.carbon
index cef14c5d9e0a..64f07651e11b 100644
--- a/toolchain/check/testdata/class/generic/import.carbon
+++ b/toolchain/check/testdata/class/generic/import.carbon
@@ -114,14 +114,7 @@ class Class(U:! type) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -286,14 +279,7 @@ class Class(U:! type) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.4 = import_ref Main//foo, inst+26, unloaded
 // CHECK:STDOUT:   %import_ref.5 = import_ref Main//foo, inst+38, unloaded
@@ -466,14 +452,7 @@ class Class(U:! type) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.4
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.4: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.5 = import_ref Main//foo, inst+26, unloaded
@@ -675,14 +654,7 @@ class Class(U:! type) {
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.8
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.4 = import_ref Main//foo, inst+26, unloaded
 // CHECK:STDOUT:   %import_ref.5 = import_ref Main//foo, inst+38, unloaded
@@ -883,14 +855,7 @@ class Class(U:! type) {
 // CHECK:STDOUT:   %import_ref.3 = import_ref Main//foo, inst+71, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/init.carbon b/toolchain/check/testdata/class/generic/init.carbon
index 383b183e86bf..b5c636892f97 100644
--- a/toolchain/check/testdata/class/generic/init.carbon
+++ b/toolchain/check/testdata/class/generic/init.carbon
@@ -73,14 +73,7 @@ fn InitFromAdaptedSpecific(x: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -275,14 +268,7 @@ fn InitFromAdaptedSpecific(x: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/generic/member_access.carbon b/toolchain/check/testdata/class/generic/member_access.carbon
index 538def6c2b60..1e0755d788cc 100644
--- a/toolchain/check/testdata/class/generic/member_access.carbon
+++ b/toolchain/check/testdata/class/generic/member_access.carbon
@@ -92,14 +92,7 @@ fn StaticMemberFunctionCall(T:! type) -> Class(T) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -433,14 +426,7 @@ fn StaticMemberFunctionCall(T:! type) -> Class(T) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/class/generic/member_inline.carbon b/toolchain/check/testdata/class/generic/member_inline.carbon
index 246498b64811..f3044dea1059 100644
--- a/toolchain/check/testdata/class/generic/member_inline.carbon
+++ b/toolchain/check/testdata/class/generic/member_inline.carbon
@@ -60,14 +60,7 @@ class C(T:! type) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -223,14 +216,7 @@ class C(T:! type) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/member_out_of_line.carbon b/toolchain/check/testdata/class/generic/member_out_of_line.carbon
index 9dd617e13141..fa7fcfa299d4 100644
--- a/toolchain/check/testdata/class/generic/member_out_of_line.carbon
+++ b/toolchain/check/testdata/class/generic/member_out_of_line.carbon
@@ -129,14 +129,7 @@ fn Generic(T:! ()).WrongType() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -329,14 +322,7 @@ fn Generic(T:! ()).WrongType() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -504,14 +490,7 @@ fn Generic(T:! ()).WrongType() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -576,14 +555,7 @@ fn Generic(T:! ()).WrongType() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -666,14 +638,7 @@ fn Generic(T:! ()).WrongType() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -776,14 +741,7 @@ fn Generic(T:! ()).WrongType() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/method_deduce.carbon b/toolchain/check/testdata/class/generic/method_deduce.carbon
index 40a3e1ddf912..5f9133a3ee73 100644
--- a/toolchain/check/testdata/class/generic/method_deduce.carbon
+++ b/toolchain/check/testdata/class/generic/method_deduce.carbon
@@ -70,14 +70,7 @@ fn CallGenericMethodWithNonDeducedParam(c: Class(A)) -> (A, B) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/redeclare.carbon b/toolchain/check/testdata/class/generic/redeclare.carbon
index 743394f094b0..029b415fb26e 100644
--- a/toolchain/check/testdata/class/generic/redeclare.carbon
+++ b/toolchain/check/testdata/class/generic/redeclare.carbon
@@ -103,14 +103,7 @@ class E(U:! type) {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -172,14 +165,7 @@ class E(U:! type) {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -246,14 +232,7 @@ class E(U:! type) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -350,14 +329,7 @@ class E(U:! type) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -452,14 +424,7 @@ class E(U:! type) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -543,14 +508,7 @@ class E(U:! type) {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic/self.carbon b/toolchain/check/testdata/class/generic/self.carbon
index eddfa7cd2c3b..3a266a9951c9 100644
--- a/toolchain/check/testdata/class/generic/self.carbon
+++ b/toolchain/check/testdata/class/generic/self.carbon
@@ -45,14 +45,7 @@ class Class(T:! type) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/generic_method.carbon b/toolchain/check/testdata/class/generic_method.carbon
index 6624c1f1a4a6..132978aa7148 100644
--- a/toolchain/check/testdata/class/generic_method.carbon
+++ b/toolchain/check/testdata/class/generic_method.carbon
@@ -36,14 +36,7 @@ fn Class(T:! type).F[self: Self](n: T) {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/import.carbon b/toolchain/check/testdata/class/import.carbon
index cc6ec8fcfae2..39de4c6aaee5 100644
--- a/toolchain/check/testdata/class/import.carbon
+++ b/toolchain/check/testdata/class/import.carbon
@@ -75,14 +75,7 @@ fn Run() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -195,14 +188,7 @@ fn Run() {
 // CHECK:STDOUT:   %import_ref.4: type = import_ref Main//a, inst+51, loaded [template = constants.%Incomplete]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT:   %import_ref.6 = import_ref Main//a, inst+9, unloaded
diff --git a/toolchain/check/testdata/class/import_base.carbon b/toolchain/check/testdata/class/import_base.carbon
index beb6d44cb925..019d3238f438 100644
--- a/toolchain/check/testdata/class/import_base.carbon
+++ b/toolchain/check/testdata/class/import_base.carbon
@@ -61,14 +61,7 @@ fn Run() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -168,14 +161,7 @@ fn Run() {
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Main//a, inst+45, loaded [template = constants.%Child]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.3 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT:   %import_ref.4: %F.type = import_ref Main//a, inst+10, loaded [template = constants.%F]
diff --git a/toolchain/check/testdata/class/import_forward_decl.carbon b/toolchain/check/testdata/class/import_forward_decl.carbon
index aa8cb938766e..42c5e13dcd90 100644
--- a/toolchain/check/testdata/class/import_forward_decl.carbon
+++ b/toolchain/check/testdata/class/import_forward_decl.carbon
@@ -30,14 +30,7 @@ class ForwardDecl {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -64,14 +57,7 @@ class ForwardDecl {
 // CHECK:STDOUT:   %import_ref: type = import_ref Main//a, inst+3, loaded [template = constants.%ForwardDecl]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/import_indirect.carbon b/toolchain/check/testdata/class/import_indirect.carbon
index fbda4cc0f140..ad56f0275d6a 100644
--- a/toolchain/check/testdata/class/import_indirect.carbon
+++ b/toolchain/check/testdata/class/import_indirect.carbon
@@ -111,14 +111,7 @@ var ptr: E* = &val;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -154,14 +147,7 @@ var ptr: E* = &val;
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Main//a, inst+3, loaded [template = constants.%C]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT: }
@@ -220,14 +206,7 @@ var ptr: E* = &val;
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Main//a, inst+3, loaded [template = constants.%C]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT: }
@@ -289,14 +268,7 @@ var ptr: E* = &val;
 // CHECK:STDOUT:   %import_ref.4 = import_ref Main//b, inst+26, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT: }
@@ -358,14 +330,7 @@ var ptr: E* = &val;
 // CHECK:STDOUT:   %import_ref.4: type = import_ref Main//a, inst+3, loaded [template = constants.%C]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT: }
@@ -429,14 +394,7 @@ var ptr: E* = &val;
 // CHECK:STDOUT:   %import_ref.6 = import_ref Main//c, inst+26, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.7 = import_ref Main//b, inst+9, unloaded
 // CHECK:STDOUT: }
@@ -502,14 +460,7 @@ var ptr: E* = &val;
 // CHECK:STDOUT:   %import_ref.6 = import_ref Main//b, inst+26, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.7 = import_ref Main//b, inst+9, unloaded
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/import_member_cycle.carbon b/toolchain/check/testdata/class/import_member_cycle.carbon
index 7c6a2b2d25be..dbe3f325ee8a 100644
--- a/toolchain/check/testdata/class/import_member_cycle.carbon
+++ b/toolchain/check/testdata/class/import_member_cycle.carbon
@@ -39,14 +39,7 @@ fn Run() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -86,14 +79,7 @@ fn Run() {
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Main//a, inst+3, loaded [template = constants.%Cycle]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT:   %import_ref.3 = import_ref Main//a, inst+9, unloaded
diff --git a/toolchain/check/testdata/class/import_struct_cyle.carbon b/toolchain/check/testdata/class/import_struct_cyle.carbon
index cab6eaa127a0..da470ef18209 100644
--- a/toolchain/check/testdata/class/import_struct_cyle.carbon
+++ b/toolchain/check/testdata/class/import_struct_cyle.carbon
@@ -45,14 +45,7 @@ fn Run() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -104,14 +97,7 @@ fn Run() {
 // CHECK:STDOUT:   %import_ref.2: ref %.3 = import_ref Main//a, inst+13, loaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.3 = import_ref Main//a, inst+4, unloaded
 // CHECK:STDOUT:   %import_ref.4: %.7 = import_ref Main//a, inst+20, loaded [template = %.1]
diff --git a/toolchain/check/testdata/class/inheritance_access.carbon b/toolchain/check/testdata/class/inheritance_access.carbon
index de692232331a..f73cff0ef822 100644
--- a/toolchain/check/testdata/class/inheritance_access.carbon
+++ b/toolchain/check/testdata/class/inheritance_access.carbon
@@ -254,14 +254,7 @@ class B {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -387,14 +380,7 @@ class B {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -514,14 +500,7 @@ class B {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -644,14 +623,7 @@ class B {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -732,14 +704,7 @@ class B {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -793,14 +758,7 @@ class B {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -860,14 +818,7 @@ class B {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -939,14 +890,7 @@ class B {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -1024,14 +968,7 @@ class B {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -1164,14 +1101,7 @@ class B {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -1254,14 +1184,7 @@ class B {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/init.carbon b/toolchain/check/testdata/class/init.carbon
index 98fa67abe3b3..2e3ca575a314 100644
--- a/toolchain/check/testdata/class/init.carbon
+++ b/toolchain/check/testdata/class/init.carbon
@@ -45,14 +45,7 @@ fn MakeReorder(n: i32, next: Class*) -> Class {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/init_adapt.carbon b/toolchain/check/testdata/class/init_adapt.carbon
index 4075b9a43338..d202547a1860 100644
--- a/toolchain/check/testdata/class/init_adapt.carbon
+++ b/toolchain/check/testdata/class/init_adapt.carbon
@@ -117,14 +117,7 @@ var e: C = MakeAdaptC();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -295,14 +288,7 @@ var e: C = MakeAdaptC();
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/class/init_as.carbon b/toolchain/check/testdata/class/init_as.carbon
index 0feeb6d9bf4a..5e28801068fc 100644
--- a/toolchain/check/testdata/class/init_as.carbon
+++ b/toolchain/check/testdata/class/init_as.carbon
@@ -39,14 +39,7 @@ fn F() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/init_nested.carbon b/toolchain/check/testdata/class/init_nested.carbon
index 36fc6c96bbd1..e2afe42df3b6 100644
--- a/toolchain/check/testdata/class/init_nested.carbon
+++ b/toolchain/check/testdata/class/init_nested.carbon
@@ -52,14 +52,7 @@ fn MakeOuter() -> Outer {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/method.carbon b/toolchain/check/testdata/class/method.carbon
index 982ec49496f3..04034e1a7792 100644
--- a/toolchain/check/testdata/class/method.carbon
+++ b/toolchain/check/testdata/class/method.carbon
@@ -100,14 +100,7 @@ fn CallGOnInitializingExpr() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/nested.carbon b/toolchain/check/testdata/class/nested.carbon
index de1d696bbfbe..afde1cb442aa 100644
--- a/toolchain/check/testdata/class/nested.carbon
+++ b/toolchain/check/testdata/class/nested.carbon
@@ -80,14 +80,7 @@ fn F(a: Outer*) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/nested_name.carbon b/toolchain/check/testdata/class/nested_name.carbon
index 1af2f19b4237..958041c52583 100644
--- a/toolchain/check/testdata/class/nested_name.carbon
+++ b/toolchain/check/testdata/class/nested_name.carbon
@@ -47,14 +47,7 @@ fn G(o: Outer) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/raw_self.carbon b/toolchain/check/testdata/class/raw_self.carbon
index cb077ac47002..70dea3b4d431 100644
--- a/toolchain/check/testdata/class/raw_self.carbon
+++ b/toolchain/check/testdata/class/raw_self.carbon
@@ -47,14 +47,7 @@ fn Class.G[self: Self](r#self: i32) -> (i32, i32) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/raw_self_type.carbon b/toolchain/check/testdata/class/raw_self_type.carbon
index f1472d377b30..22c8cd800d56 100644
--- a/toolchain/check/testdata/class/raw_self_type.carbon
+++ b/toolchain/check/testdata/class/raw_self_type.carbon
@@ -43,14 +43,7 @@ fn MemberNamedSelf.F(x: Self, y: r#Self) {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/redeclaration.carbon b/toolchain/check/testdata/class/redeclaration.carbon
index 88884cecab11..b3518b7e1590 100644
--- a/toolchain/check/testdata/class/redeclaration.carbon
+++ b/toolchain/check/testdata/class/redeclaration.carbon
@@ -34,14 +34,7 @@ fn Class.F[self: Self](b: bool) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/redeclaration_introducer.carbon b/toolchain/check/testdata/class/redeclaration_introducer.carbon
index bf36b192702a..b7de42984cd3 100644
--- a/toolchain/check/testdata/class/redeclaration_introducer.carbon
+++ b/toolchain/check/testdata/class/redeclaration_introducer.carbon
@@ -29,14 +29,7 @@ abstract class C {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/class/reenter_scope.carbon b/toolchain/check/testdata/class/reenter_scope.carbon
index 1cf1af8045a9..a816fd50ecec 100644
--- a/toolchain/check/testdata/class/reenter_scope.carbon
+++ b/toolchain/check/testdata/class/reenter_scope.carbon
@@ -38,14 +38,7 @@ fn Class.F() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/reorder.carbon b/toolchain/check/testdata/class/reorder.carbon
index a01b36f4f57e..d5e459c063e7 100644
--- a/toolchain/check/testdata/class/reorder.carbon
+++ b/toolchain/check/testdata/class/reorder.carbon
@@ -39,14 +39,7 @@ class Class {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/reorder_qualified.carbon b/toolchain/check/testdata/class/reorder_qualified.carbon
index 5ea5420fca13..b5355093f16a 100644
--- a/toolchain/check/testdata/class/reorder_qualified.carbon
+++ b/toolchain/check/testdata/class/reorder_qualified.carbon
@@ -96,14 +96,7 @@ class A {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/scope.carbon b/toolchain/check/testdata/class/scope.carbon
index 183ee7763dc4..de6d5e741d77 100644
--- a/toolchain/check/testdata/class/scope.carbon
+++ b/toolchain/check/testdata/class/scope.carbon
@@ -53,14 +53,7 @@ fn Run() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/self.carbon b/toolchain/check/testdata/class/self.carbon
index 709fb578cdc2..1720746043f5 100644
--- a/toolchain/check/testdata/class/self.carbon
+++ b/toolchain/check/testdata/class/self.carbon
@@ -70,14 +70,7 @@ class Class {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -222,14 +215,7 @@ class Class {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/class/self_conversion.carbon b/toolchain/check/testdata/class/self_conversion.carbon
index dde6def3ffd0..62ebca2e7f31 100644
--- a/toolchain/check/testdata/class/self_conversion.carbon
+++ b/toolchain/check/testdata/class/self_conversion.carbon
@@ -64,14 +64,7 @@ fn Call(p: Derived*) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/self_type.carbon b/toolchain/check/testdata/class/self_type.carbon
index bd0c8c77cec0..689cbcfb3c88 100644
--- a/toolchain/check/testdata/class/self_type.carbon
+++ b/toolchain/check/testdata/class/self_type.carbon
@@ -44,14 +44,7 @@ fn Class.F[self: Self]() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/static_method.carbon b/toolchain/check/testdata/class/static_method.carbon
index 971da3cb8cb1..d3f8a9d70cbe 100644
--- a/toolchain/check/testdata/class/static_method.carbon
+++ b/toolchain/check/testdata/class/static_method.carbon
@@ -37,14 +37,7 @@ fn Run() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/syntactic_merge_literal.carbon b/toolchain/check/testdata/class/syntactic_merge_literal.carbon
index d259ccf913ee..82a23947be0d 100644
--- a/toolchain/check/testdata/class/syntactic_merge_literal.carbon
+++ b/toolchain/check/testdata/class/syntactic_merge_literal.carbon
@@ -55,14 +55,7 @@ class D(b:! C(1_000)) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -181,14 +174,7 @@ class D(b:! C(1_000)) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/todo_access_modifiers.carbon b/toolchain/check/testdata/class/todo_access_modifiers.carbon
index 45da43f9443c..18c9233e8c5f 100644
--- a/toolchain/check/testdata/class/todo_access_modifiers.carbon
+++ b/toolchain/check/testdata/class/todo_access_modifiers.carbon
@@ -39,14 +39,7 @@ class Access {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/class/virtual_modifiers.carbon b/toolchain/check/testdata/class/virtual_modifiers.carbon
index 3380e7dbb4c6..3807b1d08ed3 100644
--- a/toolchain/check/testdata/class/virtual_modifiers.carbon
+++ b/toolchain/check/testdata/class/virtual_modifiers.carbon
@@ -75,14 +75,7 @@ fn F() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -151,14 +144,7 @@ fn F() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Modifiers: <namespace> = namespace file.%Modifiers.import, [template] {
 // CHECK:STDOUT:     .Base = %import_ref.1
@@ -221,14 +207,7 @@ fn F() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Modifiers: <namespace> = namespace file.%Modifiers.import, [template] {
 // CHECK:STDOUT:     .Base = %import_ref.1
diff --git a/toolchain/check/testdata/const/basic.carbon b/toolchain/check/testdata/const/basic.carbon
index 77482061c0b4..5c796cd2a1fd 100644
--- a/toolchain/check/testdata/const/basic.carbon
+++ b/toolchain/check/testdata/const/basic.carbon
@@ -37,14 +37,7 @@ fn B(p: const (i32*)) -> const (i32*) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/const/collapse.carbon b/toolchain/check/testdata/const/collapse.carbon
index 62a672ad8373..9ddde2d8c48f 100644
--- a/toolchain/check/testdata/const/collapse.carbon
+++ b/toolchain/check/testdata/const/collapse.carbon
@@ -33,14 +33,7 @@ fn F(p: const i32**) -> const (const i32)** {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/const/fail_collapse.carbon b/toolchain/check/testdata/const/fail_collapse.carbon
index 54ad49593f63..7b09b0ea5f09 100644
--- a/toolchain/check/testdata/const/fail_collapse.carbon
+++ b/toolchain/check/testdata/const/fail_collapse.carbon
@@ -59,14 +59,7 @@ fn G(p: const (const i32)**) -> i32** {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/const/import.carbon b/toolchain/check/testdata/const/import.carbon
index 8e594c39b966..1040d39a8597 100644
--- a/toolchain/check/testdata/const/import.carbon
+++ b/toolchain/check/testdata/const/import.carbon
@@ -42,14 +42,7 @@ var a_ptr: const i32* = a_ptr_ref;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -120,14 +113,7 @@ var a_ptr: const i32* = a_ptr_ref;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.4
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.4: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/deduce/array.carbon b/toolchain/check/testdata/deduce/array.carbon
index ba4cb4cadfc5..6ca75c015ca8 100644
--- a/toolchain/check/testdata/deduce/array.carbon
+++ b/toolchain/check/testdata/deduce/array.carbon
@@ -128,14 +128,7 @@ fn G() -> C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -282,14 +275,7 @@ fn G() -> C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -428,14 +414,7 @@ fn G() -> C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -592,14 +571,7 @@ fn G() -> C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -818,14 +790,7 @@ fn G() -> C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/deduce/generic_type.carbon b/toolchain/check/testdata/deduce/generic_type.carbon
index 2a68bf5055c1..6150ed9a88aa 100644
--- a/toolchain/check/testdata/deduce/generic_type.carbon
+++ b/toolchain/check/testdata/deduce/generic_type.carbon
@@ -91,14 +91,7 @@ fn G() -> i32 {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -275,14 +268,7 @@ fn G() -> i32 {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -474,14 +460,7 @@ fn G() -> i32 {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -774,14 +753,7 @@ fn G() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/deduce/int_float.carbon b/toolchain/check/testdata/deduce/int_float.carbon
index 6f874a37b662..03044c36c73d 100644
--- a/toolchain/check/testdata/deduce/int_float.carbon
+++ b/toolchain/check/testdata/deduce/int_float.carbon
@@ -61,14 +61,7 @@ fn G(a: f64) -> Core.BigInt() {
 // CHECK:STDOUT:     .BigInt = %import_ref.1
 // CHECK:STDOUT:     .Int = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %BigInt.type = import_ref Core//prelude/types, inst+7, loaded [template = constants.%BigInt]
 // CHECK:STDOUT:   %import_ref.2: %Int.type = import_ref Core//prelude/types, inst+30, loaded [template = constants.%Int]
@@ -199,14 +192,7 @@ fn G(a: f64) -> Core.BigInt() {
 // CHECK:STDOUT:     .BigInt = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %BigInt.type = import_ref Core//prelude/types, inst+7, loaded [template = constants.%BigInt]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/deduce/tuple.carbon b/toolchain/check/testdata/deduce/tuple.carbon
index 9a03242d4c01..5d723587b7a8 100644
--- a/toolchain/check/testdata/deduce/tuple.carbon
+++ b/toolchain/check/testdata/deduce/tuple.carbon
@@ -82,14 +82,7 @@ fn G(pair: (C, D)) -> D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -260,14 +253,7 @@ fn G(pair: (C, D)) -> D {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -466,14 +452,7 @@ fn G(pair: (C, D)) -> D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/deduce/type_operator.carbon b/toolchain/check/testdata/deduce/type_operator.carbon
index 0fd3750da502..06b8fafecb9b 100644
--- a/toolchain/check/testdata/deduce/type_operator.carbon
+++ b/toolchain/check/testdata/deduce/type_operator.carbon
@@ -85,14 +85,7 @@ fn G(p: C*) -> const C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -225,14 +218,7 @@ fn G(p: C*) -> const C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -370,14 +356,7 @@ fn G(p: C*) -> const C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -511,14 +490,7 @@ fn G(p: C*) -> const C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/eval/aggregate.carbon b/toolchain/check/testdata/eval/aggregate.carbon
index 1e91aa82492b..8ffa29009e17 100644
--- a/toolchain/check/testdata/eval/aggregate.carbon
+++ b/toolchain/check/testdata/eval/aggregate.carbon
@@ -56,14 +56,7 @@ var struct_access: [i32; 1] = (0,) as [i32; {.a = 3, .b = 1}.b];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/eval/fail_aggregate.carbon b/toolchain/check/testdata/eval/fail_aggregate.carbon
index e9986889bac2..e636ae513601 100644
--- a/toolchain/check/testdata/eval/fail_aggregate.carbon
+++ b/toolchain/check/testdata/eval/fail_aggregate.carbon
@@ -42,14 +42,7 @@ var array_index: [i32; 1] = (0,) as [i32; ((5, 7, 1, 9) as [i32; 4])[2]];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/eval/fail_symbolic.carbon b/toolchain/check/testdata/eval/fail_symbolic.carbon
index 60b8625fb22d..0608fc145025 100644
--- a/toolchain/check/testdata/eval/fail_symbolic.carbon
+++ b/toolchain/check/testdata/eval/fail_symbolic.carbon
@@ -32,14 +32,7 @@ fn G(N:! i32) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/eval/symbolic.carbon b/toolchain/check/testdata/eval/symbolic.carbon
index 7cf99395b502..0062f0adc084 100644
--- a/toolchain/check/testdata/eval/symbolic.carbon
+++ b/toolchain/check/testdata/eval/symbolic.carbon
@@ -38,14 +38,7 @@ fn F(T:! type) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/expr_category/in_place_tuple_init.carbon b/toolchain/check/testdata/expr_category/in_place_tuple_init.carbon
index 779f900bade6..5fb73ea8737a 100644
--- a/toolchain/check/testdata/expr_category/in_place_tuple_init.carbon
+++ b/toolchain/check/testdata/expr_category/in_place_tuple_init.carbon
@@ -42,14 +42,7 @@ fn H() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/builtin/call.carbon b/toolchain/check/testdata/function/builtin/call.carbon
index 56f952b2d201..809498149a30 100644
--- a/toolchain/check/testdata/function/builtin/call.carbon
+++ b/toolchain/check/testdata/function/builtin/call.carbon
@@ -31,14 +31,7 @@ var arr: [i32; Add(1, 2)];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/builtin/definition.carbon b/toolchain/check/testdata/function/builtin/definition.carbon
index e4b4282824ac..3b9595398bf7 100644
--- a/toolchain/check/testdata/function/builtin/definition.carbon
+++ b/toolchain/check/testdata/function/builtin/definition.carbon
@@ -24,14 +24,7 @@ fn Add(a: i32, b: i32) -> i32 = "int.sadd";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/builtin/fail_redefined.carbon b/toolchain/check/testdata/function/builtin/fail_redefined.carbon
index 64056696e36e..dd2cdcaf59ce 100644
--- a/toolchain/check/testdata/function/builtin/fail_redefined.carbon
+++ b/toolchain/check/testdata/function/builtin/fail_redefined.carbon
@@ -55,14 +55,7 @@ fn C(n: i32, m: i32) -> i32 = "int.sadd";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/builtin/fail_unknown.carbon b/toolchain/check/testdata/function/builtin/fail_unknown.carbon
index 042c3c0471d1..5f1a24adecf1 100644
--- a/toolchain/check/testdata/function/builtin/fail_unknown.carbon
+++ b/toolchain/check/testdata/function/builtin/fail_unknown.carbon
@@ -24,14 +24,7 @@ fn UnknownBuiltin() = "unknown.builtin.name";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/function/builtin/method.carbon b/toolchain/check/testdata/function/builtin/method.carbon
index 47f916c908af..e90cbcb1c187 100644
--- a/toolchain/check/testdata/function/builtin/method.carbon
+++ b/toolchain/check/testdata/function/builtin/method.carbon
@@ -45,14 +45,7 @@ var arr: [i32; 1.(I.F)(2)];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/fail_not_callable.carbon b/toolchain/check/testdata/function/call/fail_not_callable.carbon
index f97f52d3bb8e..02c3ae3618b6 100644
--- a/toolchain/check/testdata/function/call/fail_not_callable.carbon
+++ b/toolchain/check/testdata/function/call/fail_not_callable.carbon
@@ -31,14 +31,7 @@ fn Run() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/fail_param_count.carbon b/toolchain/check/testdata/function/call/fail_param_count.carbon
index 2972c5a15080..e129e7bfc92c 100644
--- a/toolchain/check/testdata/function/call/fail_param_count.carbon
+++ b/toolchain/check/testdata/function/call/fail_param_count.carbon
@@ -86,14 +86,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/fail_param_type.carbon b/toolchain/check/testdata/function/call/fail_param_type.carbon
index 7f482bd45d93..0a6074ce3ebe 100644
--- a/toolchain/check/testdata/function/call/fail_param_type.carbon
+++ b/toolchain/check/testdata/function/call/fail_param_type.carbon
@@ -58,14 +58,7 @@ fn F() {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/function/call/fail_return_type_mismatch.carbon b/toolchain/check/testdata/function/call/fail_return_type_mismatch.carbon
index c2307e3ff108..e87f81c7199f 100644
--- a/toolchain/check/testdata/function/call/fail_return_type_mismatch.carbon
+++ b/toolchain/check/testdata/function/call/fail_return_type_mismatch.carbon
@@ -59,14 +59,7 @@ fn Run() {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.3
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/function/call/i32.carbon b/toolchain/check/testdata/function/call/i32.carbon
index 9b85af3779dc..379e748d06b1 100644
--- a/toolchain/check/testdata/function/call/i32.carbon
+++ b/toolchain/check/testdata/function/call/i32.carbon
@@ -33,14 +33,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/more_param_ir.carbon b/toolchain/check/testdata/function/call/more_param_ir.carbon
index dbd329c97249..98cbfdcb3bac 100644
--- a/toolchain/check/testdata/function/call/more_param_ir.carbon
+++ b/toolchain/check/testdata/function/call/more_param_ir.carbon
@@ -38,14 +38,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/params_one.carbon b/toolchain/check/testdata/function/call/params_one.carbon
index 8cf53d401aef..da0d367c7c04 100644
--- a/toolchain/check/testdata/function/call/params_one.carbon
+++ b/toolchain/check/testdata/function/call/params_one.carbon
@@ -31,14 +31,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/params_one_comma.carbon b/toolchain/check/testdata/function/call/params_one_comma.carbon
index 479d0add0f22..c2bd89d5887a 100644
--- a/toolchain/check/testdata/function/call/params_one_comma.carbon
+++ b/toolchain/check/testdata/function/call/params_one_comma.carbon
@@ -32,14 +32,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/params_two.carbon b/toolchain/check/testdata/function/call/params_two.carbon
index 4e924ea6ef96..19cf8688801a 100644
--- a/toolchain/check/testdata/function/call/params_two.carbon
+++ b/toolchain/check/testdata/function/call/params_two.carbon
@@ -32,14 +32,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/call/params_two_comma.carbon b/toolchain/check/testdata/function/call/params_two_comma.carbon
index 957f1a233afa..f38e2d082b3e 100644
--- a/toolchain/check/testdata/function/call/params_two_comma.carbon
+++ b/toolchain/check/testdata/function/call/params_two_comma.carbon
@@ -33,14 +33,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/declaration/fail_param_in_type.carbon b/toolchain/check/testdata/function/declaration/fail_param_in_type.carbon
index 18827517ef1d..584b79fd7751 100644
--- a/toolchain/check/testdata/function/declaration/fail_param_in_type.carbon
+++ b/toolchain/check/testdata/function/declaration/fail_param_in_type.carbon
@@ -27,14 +27,7 @@ fn F(n: i32, a: [i32; n]*);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/declaration/fail_param_redecl.carbon b/toolchain/check/testdata/function/declaration/fail_param_redecl.carbon
index 8f8fb9cf0be2..6b61ee72c542 100644
--- a/toolchain/check/testdata/function/declaration/fail_param_redecl.carbon
+++ b/toolchain/check/testdata/function/declaration/fail_param_redecl.carbon
@@ -30,14 +30,7 @@ fn F(n: i32, n: i32);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/declaration/import.carbon b/toolchain/check/testdata/function/declaration/import.carbon
index 55d5b2ed9675..76168bfedd0f 100644
--- a/toolchain/check/testdata/function/declaration/import.carbon
+++ b/toolchain/check/testdata/function/declaration/import.carbon
@@ -280,14 +280,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -384,14 +377,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -498,14 +484,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.7: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -625,14 +604,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.7: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -782,14 +754,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.7: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -943,14 +908,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.12
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.12: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -1074,14 +1032,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.12
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.12: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -1179,14 +1130,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %import_ref.6 = import_ref Main//api, inst+60, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -1217,14 +1161,7 @@ import library "extern_api";
 // CHECK:STDOUT:   %import_ref.6 = import_ref Main//extern_api, inst+60, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/function/declaration/param_same_name.carbon b/toolchain/check/testdata/function/declaration/param_same_name.carbon
index 91c07d979905..bb626cfbae3f 100644
--- a/toolchain/check/testdata/function/declaration/param_same_name.carbon
+++ b/toolchain/check/testdata/function/declaration/param_same_name.carbon
@@ -28,14 +28,7 @@ fn G(a: i32);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/definition/import.carbon b/toolchain/check/testdata/function/definition/import.carbon
index 04c51553da95..218b3680f992 100644
--- a/toolchain/check/testdata/function/definition/import.carbon
+++ b/toolchain/check/testdata/function/definition/import.carbon
@@ -133,14 +133,7 @@ fn D() {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -232,14 +225,7 @@ fn D() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -280,14 +266,7 @@ fn D() {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -369,14 +348,7 @@ fn D() {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -427,14 +399,7 @@ fn D() {}
 // CHECK:STDOUT:   %import_ref: %A.type = import_ref Main//extern, inst+3, loaded [template = constants.%A]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -469,14 +434,7 @@ fn D() {}
 // CHECK:STDOUT:   %import_ref.4: %D.type = import_ref Main//fns, inst+68, loaded [template = constants.%D]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/function/definition/import_access.carbon b/toolchain/check/testdata/function/definition/import_access.carbon
index f594c80877a1..2fe281686d87 100644
--- a/toolchain/check/testdata/function/definition/import_access.carbon
+++ b/toolchain/check/testdata/function/definition/import_access.carbon
@@ -146,14 +146,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -182,14 +175,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -219,14 +205,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -253,14 +232,7 @@ private fn Redecl() {}
 // CHECK:STDOUT:   %import_ref: %Def.type = import_ref Test//def, inst+3, loaded [template = constants.%Def]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -298,14 +270,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -338,14 +303,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Test: <namespace> = namespace file.%Test.import, [template] {
 // CHECK:STDOUT:     import Test//def
@@ -386,14 +344,7 @@ private fn Redecl() {}
 // CHECK:STDOUT:   %import_ref: %ForwardWithDef.type = import_ref Test//forward_with_def, inst+3, loaded [template = constants.%ForwardWithDef]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -431,14 +382,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -471,14 +415,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Test: <namespace> = namespace file.%Test.import, [template] {
 // CHECK:STDOUT:     import Test//forward_with_def
@@ -519,14 +456,7 @@ private fn Redecl() {}
 // CHECK:STDOUT:   %import_ref: %Forward.type = import_ref Test//forward, inst+3, loaded [template = constants.%Forward]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -568,14 +498,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -608,14 +531,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Test: <namespace> = namespace file.%Test.import, [template] {
 // CHECK:STDOUT:     import Test//forward
@@ -655,14 +571,7 @@ private fn Redecl() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/function/definition/params_one.carbon b/toolchain/check/testdata/function/definition/params_one.carbon
index da520fcb3498..43e2368a94f9 100644
--- a/toolchain/check/testdata/function/definition/params_one.carbon
+++ b/toolchain/check/testdata/function/definition/params_one.carbon
@@ -24,14 +24,7 @@ fn Foo(a: i32) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/definition/params_one_comma.carbon b/toolchain/check/testdata/function/definition/params_one_comma.carbon
index 3374466939ed..1f7bd2685f43 100644
--- a/toolchain/check/testdata/function/definition/params_one_comma.carbon
+++ b/toolchain/check/testdata/function/definition/params_one_comma.carbon
@@ -24,14 +24,7 @@ fn Foo(a: i32,) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/definition/params_two.carbon b/toolchain/check/testdata/function/definition/params_two.carbon
index 9d2cf2fbdd53..a30ab1dd03b5 100644
--- a/toolchain/check/testdata/function/definition/params_two.carbon
+++ b/toolchain/check/testdata/function/definition/params_two.carbon
@@ -24,14 +24,7 @@ fn Foo(a: i32, b: i32) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/definition/params_two_comma.carbon b/toolchain/check/testdata/function/definition/params_two_comma.carbon
index a36198bb5293..8e9bd0bde3ba 100644
--- a/toolchain/check/testdata/function/definition/params_two_comma.carbon
+++ b/toolchain/check/testdata/function/definition/params_two_comma.carbon
@@ -24,14 +24,7 @@ fn Foo(a: i32, b: i32,) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/generic/deduce.carbon b/toolchain/check/testdata/function/generic/deduce.carbon
index f9cecf7a0681..afabdc787363 100644
--- a/toolchain/check/testdata/function/generic/deduce.carbon
+++ b/toolchain/check/testdata/function/generic/deduce.carbon
@@ -157,14 +157,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -340,14 +333,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -483,14 +469,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -623,14 +602,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -764,14 +736,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -868,14 +833,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -954,14 +912,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -1037,14 +988,7 @@ fn CallImplicitNotDeducible() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/function/generic/fail_todo_param_in_type.carbon b/toolchain/check/testdata/function/generic/fail_todo_param_in_type.carbon
index 235ec387ed38..d9262fad9475 100644
--- a/toolchain/check/testdata/function/generic/fail_todo_param_in_type.carbon
+++ b/toolchain/check/testdata/function/generic/fail_todo_param_in_type.carbon
@@ -29,14 +29,7 @@ fn F(N:! i32, a: [i32; N]*);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/generic/redeclare.carbon b/toolchain/check/testdata/function/generic/redeclare.carbon
index b758cdb8c524..3be32c0fad6f 100644
--- a/toolchain/check/testdata/function/generic/redeclare.carbon
+++ b/toolchain/check/testdata/function/generic/redeclare.carbon
@@ -105,14 +105,7 @@ fn F(U:! type, T:! type) -> U* {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -206,14 +199,7 @@ fn F(U:! type, T:! type) -> U* {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -325,14 +311,7 @@ fn F(U:! type, T:! type) -> U* {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -444,14 +423,7 @@ fn F(U:! type, T:! type) -> U* {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/function/generic/resolve_used.carbon b/toolchain/check/testdata/function/generic/resolve_used.carbon
index 431e5e9467e7..36ea967bf7e0 100644
--- a/toolchain/check/testdata/function/generic/resolve_used.carbon
+++ b/toolchain/check/testdata/function/generic/resolve_used.carbon
@@ -53,14 +53,7 @@ fn CallNegative() {
 // CHECK:STDOUT:     .BigInt = %import_ref.1
 // CHECK:STDOUT:     .Int = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %BigInt.type = import_ref Core//prelude/types, inst+7, loaded [template = constants.%BigInt]
 // CHECK:STDOUT:   %import_ref.2: %Int.type = import_ref Core//prelude/types, inst+30, loaded [template = constants.%Int]
diff --git a/toolchain/check/testdata/function/generic/return_slot.carbon b/toolchain/check/testdata/function/generic/return_slot.carbon
index 3d7228008ea8..0e1939e63d8d 100644
--- a/toolchain/check/testdata/function/generic/return_slot.carbon
+++ b/toolchain/check/testdata/function/generic/return_slot.carbon
@@ -66,14 +66,7 @@ fn G() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/function/generic/undefined.carbon b/toolchain/check/testdata/function/generic/undefined.carbon
index a166d63f51ce..800b5149c410 100644
--- a/toolchain/check/testdata/function/generic/undefined.carbon
+++ b/toolchain/check/testdata/function/generic/undefined.carbon
@@ -70,14 +70,7 @@ fn CallUndefined() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -177,14 +170,7 @@ fn CallUndefined() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -300,14 +286,7 @@ fn CallUndefined() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/global/class_obj.carbon b/toolchain/check/testdata/global/class_obj.carbon
index 4a86c727e326..55de5abc68e8 100644
--- a/toolchain/check/testdata/global/class_obj.carbon
+++ b/toolchain/check/testdata/global/class_obj.carbon
@@ -25,14 +25,7 @@ var a: A = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/global/class_with_fun.carbon b/toolchain/check/testdata/global/class_with_fun.carbon
index 0e25d279961e..be15485a2989 100644
--- a/toolchain/check/testdata/global/class_with_fun.carbon
+++ b/toolchain/check/testdata/global/class_with_fun.carbon
@@ -31,14 +31,7 @@ var a: A = {};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/global/decl.carbon b/toolchain/check/testdata/global/decl.carbon
index 60a31e13e951..4c637da3b327 100644
--- a/toolchain/check/testdata/global/decl.carbon
+++ b/toolchain/check/testdata/global/decl.carbon
@@ -21,14 +21,7 @@ var a: i32;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/global/simple_init.carbon b/toolchain/check/testdata/global/simple_init.carbon
index 6be38e7804ee..ab4c7e19ef0b 100644
--- a/toolchain/check/testdata/global/simple_init.carbon
+++ b/toolchain/check/testdata/global/simple_init.carbon
@@ -22,14 +22,7 @@ var a: i32 = 0;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/global/simple_with_fun.carbon b/toolchain/check/testdata/global/simple_with_fun.carbon
index 38626bdc2414..dfe265424a4b 100644
--- a/toolchain/check/testdata/global/simple_with_fun.carbon
+++ b/toolchain/check/testdata/global/simple_with_fun.carbon
@@ -29,14 +29,7 @@ var a: i32 = test_a();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/if/else.carbon b/toolchain/check/testdata/if/else.carbon
index fa878853c8e9..a7a68fcc20b9 100644
--- a/toolchain/check/testdata/if/else.carbon
+++ b/toolchain/check/testdata/if/else.carbon
@@ -41,14 +41,7 @@ fn If(b: bool) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/if/fail_reachable_fallthrough.carbon b/toolchain/check/testdata/if/fail_reachable_fallthrough.carbon
index dfe85299ba71..4e94c42d99dc 100644
--- a/toolchain/check/testdata/if/fail_reachable_fallthrough.carbon
+++ b/toolchain/check/testdata/if/fail_reachable_fallthrough.carbon
@@ -62,14 +62,7 @@ fn If3(b: bool) -> i32 {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/if/fail_scope.carbon b/toolchain/check/testdata/if/fail_scope.carbon
index 7eb6ee555fab..04c19c9834e7 100644
--- a/toolchain/check/testdata/if/fail_scope.carbon
+++ b/toolchain/check/testdata/if/fail_scope.carbon
@@ -37,14 +37,7 @@ fn VarScope(b: bool) -> i32 {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/if/no_else.carbon b/toolchain/check/testdata/if/no_else.carbon
index a6b0a489751c..f040d423209e 100644
--- a/toolchain/check/testdata/if/no_else.carbon
+++ b/toolchain/check/testdata/if/no_else.carbon
@@ -36,14 +36,7 @@ fn If(b: bool) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/if/unreachable_fallthrough.carbon b/toolchain/check/testdata/if/unreachable_fallthrough.carbon
index aba0a11249fd..58d72c981013 100644
--- a/toolchain/check/testdata/if/unreachable_fallthrough.carbon
+++ b/toolchain/check/testdata/if/unreachable_fallthrough.carbon
@@ -36,14 +36,7 @@ fn If(b: bool) -> i32 {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/if_expr/basic.carbon b/toolchain/check/testdata/if_expr/basic.carbon
index 6dae484fcc0a..1e52992faf9d 100644
--- a/toolchain/check/testdata/if_expr/basic.carbon
+++ b/toolchain/check/testdata/if_expr/basic.carbon
@@ -36,14 +36,7 @@ fn F(b: bool, n: i32, m: i32) -> i32 {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/if_expr/constant_condition.carbon b/toolchain/check/testdata/if_expr/constant_condition.carbon
index ad835dbcb041..756b5f32ffad 100644
--- a/toolchain/check/testdata/if_expr/constant_condition.carbon
+++ b/toolchain/check/testdata/if_expr/constant_condition.carbon
@@ -60,14 +60,7 @@ fn PartiallyConstant(t: type) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/if_expr/control_flow.carbon b/toolchain/check/testdata/if_expr/control_flow.carbon
index 06ecc6b3fcc4..dd1e5862532e 100644
--- a/toolchain/check/testdata/if_expr/control_flow.carbon
+++ b/toolchain/check/testdata/if_expr/control_flow.carbon
@@ -38,14 +38,7 @@ fn F(b: bool) -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/if_expr/fail_not_in_function.carbon b/toolchain/check/testdata/if_expr/fail_not_in_function.carbon
index b4d2da592b8f..13588911d98a 100644
--- a/toolchain/check/testdata/if_expr/fail_not_in_function.carbon
+++ b/toolchain/check/testdata/if_expr/fail_not_in_function.carbon
@@ -60,14 +60,7 @@ class C {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/if_expr/fail_partial_constant.carbon b/toolchain/check/testdata/if_expr/fail_partial_constant.carbon
index cf3a575d23b8..069d90f0813b 100644
--- a/toolchain/check/testdata/if_expr/fail_partial_constant.carbon
+++ b/toolchain/check/testdata/if_expr/fail_partial_constant.carbon
@@ -57,14 +57,7 @@ fn ChosenBranchIsNonConstant(t: type) {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
@@ -135,14 +128,7 @@ fn ChosenBranchIsNonConstant(t: type) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/if_expr/nested.carbon b/toolchain/check/testdata/if_expr/nested.carbon
index 3e01a72a8a51..ba0c298f9c22 100644
--- a/toolchain/check/testdata/if_expr/nested.carbon
+++ b/toolchain/check/testdata/if_expr/nested.carbon
@@ -33,14 +33,7 @@ fn F(a: bool, b: bool, c: bool) -> i32 {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/if_expr/struct.carbon b/toolchain/check/testdata/if_expr/struct.carbon
index f9f810ab29ad..2b678e238abc 100644
--- a/toolchain/check/testdata/if_expr/struct.carbon
+++ b/toolchain/check/testdata/if_expr/struct.carbon
@@ -39,14 +39,7 @@ fn F(cond: bool) {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/impl/compound.carbon b/toolchain/check/testdata/impl/compound.carbon
index dc65fcbe46ec..5624783b7904 100644
--- a/toolchain/check/testdata/impl/compound.carbon
+++ b/toolchain/check/testdata/impl/compound.carbon
@@ -70,14 +70,7 @@ fn InstanceCallIndirect(p: i32*) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/declaration.carbon b/toolchain/check/testdata/impl/declaration.carbon
index 58eec6e5a856..1c6562e09a6b 100644
--- a/toolchain/check/testdata/impl/declaration.carbon
+++ b/toolchain/check/testdata/impl/declaration.carbon
@@ -26,14 +26,7 @@ impl i32 as I;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/empty.carbon b/toolchain/check/testdata/impl/empty.carbon
index 87a76f97d288..5b8cfbebe2bd 100644
--- a/toolchain/check/testdata/impl/empty.carbon
+++ b/toolchain/check/testdata/impl/empty.carbon
@@ -29,14 +29,7 @@ impl i32 as Empty {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/extend_impl.carbon b/toolchain/check/testdata/impl/extend_impl.carbon
index 1158613c976e..fd0884be6949 100644
--- a/toolchain/check/testdata/impl/extend_impl.carbon
+++ b/toolchain/check/testdata/impl/extend_impl.carbon
@@ -47,14 +47,7 @@ fn G(c: C) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/fail_call_invalid.carbon b/toolchain/check/testdata/impl/fail_call_invalid.carbon
index 9ad6cfba5f88..947c4913da10 100644
--- a/toolchain/check/testdata/impl/fail_call_invalid.carbon
+++ b/toolchain/check/testdata/impl/fail_call_invalid.carbon
@@ -45,14 +45,7 @@ fn InstanceCall(n: i32) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/fail_extend_impl_forall.carbon b/toolchain/check/testdata/impl/fail_extend_impl_forall.carbon
index 21f261635c34..fc25cf45859c 100644
--- a/toolchain/check/testdata/impl/fail_extend_impl_forall.carbon
+++ b/toolchain/check/testdata/impl/fail_extend_impl_forall.carbon
@@ -47,14 +47,7 @@ class C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/fail_extend_impl_scope.carbon b/toolchain/check/testdata/impl/fail_extend_impl_scope.carbon
index f503b97580a7..7d24c1022025 100644
--- a/toolchain/check/testdata/impl/fail_extend_impl_scope.carbon
+++ b/toolchain/check/testdata/impl/fail_extend_impl_scope.carbon
@@ -30,14 +30,7 @@ extend impl i32 as I {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/fail_extend_impl_type_as.carbon b/toolchain/check/testdata/impl/fail_extend_impl_type_as.carbon
index a8037cc72428..f6388cbd13a1 100644
--- a/toolchain/check/testdata/impl/fail_extend_impl_type_as.carbon
+++ b/toolchain/check/testdata/impl/fail_extend_impl_type_as.carbon
@@ -59,14 +59,7 @@ class E {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/fail_extend_non_interface.carbon b/toolchain/check/testdata/impl/fail_extend_non_interface.carbon
index 45c023895664..e0a3fe0c4b52 100644
--- a/toolchain/check/testdata/impl/fail_extend_non_interface.carbon
+++ b/toolchain/check/testdata/impl/fail_extend_non_interface.carbon
@@ -30,14 +30,7 @@ class C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/fail_extend_partially_defined_interface.carbon b/toolchain/check/testdata/impl/fail_extend_partially_defined_interface.carbon
index ffca24094c82..9639416ed1d7 100644
--- a/toolchain/check/testdata/impl/fail_extend_partially_defined_interface.carbon
+++ b/toolchain/check/testdata/impl/fail_extend_partially_defined_interface.carbon
@@ -34,14 +34,7 @@ interface I {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/fail_extend_undefined_interface.carbon b/toolchain/check/testdata/impl/fail_extend_undefined_interface.carbon
index 95b396a9e543..63b055e912dc 100644
--- a/toolchain/check/testdata/impl/fail_extend_undefined_interface.carbon
+++ b/toolchain/check/testdata/impl/fail_extend_undefined_interface.carbon
@@ -32,14 +32,7 @@ class C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/fail_impl_as_scope.carbon b/toolchain/check/testdata/impl/fail_impl_as_scope.carbon
index 2981cc508231..e4a0fc77a1ee 100644
--- a/toolchain/check/testdata/impl/fail_impl_as_scope.carbon
+++ b/toolchain/check/testdata/impl/fail_impl_as_scope.carbon
@@ -37,14 +37,7 @@ impl as Simple {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/fail_impl_bad_assoc_const.carbon b/toolchain/check/testdata/impl/fail_impl_bad_assoc_const.carbon
index e4da1177736e..53e46431e4d6 100644
--- a/toolchain/check/testdata/impl/fail_impl_bad_assoc_const.carbon
+++ b/toolchain/check/testdata/impl/fail_impl_bad_assoc_const.carbon
@@ -31,14 +31,7 @@ impl bool as I {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/fail_impl_bad_assoc_fn.carbon b/toolchain/check/testdata/impl/fail_impl_bad_assoc_fn.carbon
index d46b45fa3749..83ac8958d675 100644
--- a/toolchain/check/testdata/impl/fail_impl_bad_assoc_fn.carbon
+++ b/toolchain/check/testdata/impl/fail_impl_bad_assoc_fn.carbon
@@ -306,14 +306,7 @@ class SelfNestedBadReturnType {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/impl/fail_impl_bad_interface.carbon b/toolchain/check/testdata/impl/fail_impl_bad_interface.carbon
index e0ec60ce9fdc..07563d65f28a 100644
--- a/toolchain/check/testdata/impl/fail_impl_bad_interface.carbon
+++ b/toolchain/check/testdata/impl/fail_impl_bad_interface.carbon
@@ -51,14 +51,7 @@ impl i32 as false {}
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/impl/fail_redefinition.carbon b/toolchain/check/testdata/impl/fail_redefinition.carbon
index 06157f23bd5e..059dd42b3dcf 100644
--- a/toolchain/check/testdata/impl/fail_redefinition.carbon
+++ b/toolchain/check/testdata/impl/fail_redefinition.carbon
@@ -35,14 +35,7 @@ impl i32 as I {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/fail_todo_impl_assoc_const.carbon b/toolchain/check/testdata/impl/fail_todo_impl_assoc_const.carbon
index 58482e589f1d..16500f933e8b 100644
--- a/toolchain/check/testdata/impl/fail_todo_impl_assoc_const.carbon
+++ b/toolchain/check/testdata/impl/fail_todo_impl_assoc_const.carbon
@@ -57,14 +57,7 @@ impl bool as I where .T = bool {}
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/impl/impl_as.carbon b/toolchain/check/testdata/impl/impl_as.carbon
index 6c6943a781d1..8146bfb23d17 100644
--- a/toolchain/check/testdata/impl/impl_as.carbon
+++ b/toolchain/check/testdata/impl/impl_as.carbon
@@ -44,14 +44,7 @@ class C {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/impl_forall.carbon b/toolchain/check/testdata/impl/impl_forall.carbon
index 177a46351b96..d33b9738326d 100644
--- a/toolchain/check/testdata/impl/impl_forall.carbon
+++ b/toolchain/check/testdata/impl/impl_forall.carbon
@@ -36,14 +36,7 @@ impl forall [T:! type] T as Simple {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/lookup/alias.carbon b/toolchain/check/testdata/impl/lookup/alias.carbon
index f4b7e50495c1..8c075e38931b 100644
--- a/toolchain/check/testdata/impl/lookup/alias.carbon
+++ b/toolchain/check/testdata/impl/lookup/alias.carbon
@@ -49,14 +49,7 @@ fn G(c: C) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/lookup/fail_alias_impl_not_found.carbon b/toolchain/check/testdata/impl/lookup/fail_alias_impl_not_found.carbon
index ad4973c78a79..25c62c8efb86 100644
--- a/toolchain/check/testdata/impl/lookup/fail_alias_impl_not_found.carbon
+++ b/toolchain/check/testdata/impl/lookup/fail_alias_impl_not_found.carbon
@@ -49,14 +49,7 @@ fn F(c: C) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/lookup/fail_todo_undefined_impl.carbon b/toolchain/check/testdata/impl/lookup/fail_todo_undefined_impl.carbon
index 232645a4be2a..10064dc37f10 100644
--- a/toolchain/check/testdata/impl/lookup/fail_todo_undefined_impl.carbon
+++ b/toolchain/check/testdata/impl/lookup/fail_todo_undefined_impl.carbon
@@ -55,14 +55,7 @@ impl C as I {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/lookup/generic.carbon b/toolchain/check/testdata/impl/lookup/generic.carbon
index 1bffc1c7aaaf..743fc746224d 100644
--- a/toolchain/check/testdata/impl/lookup/generic.carbon
+++ b/toolchain/check/testdata/impl/lookup/generic.carbon
@@ -148,14 +148,7 @@ fn G(x: A) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -304,14 +297,7 @@ fn G(x: A) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -518,14 +504,7 @@ fn G(x: A) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -729,14 +708,7 @@ fn G(x: A) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -949,14 +921,7 @@ fn G(x: A) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -1106,14 +1071,7 @@ fn G(x: A) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/impl/lookup/instance_method.carbon b/toolchain/check/testdata/impl/lookup/instance_method.carbon
index 6860a0b7b306..2f4fba31359a 100644
--- a/toolchain/check/testdata/impl/lookup/instance_method.carbon
+++ b/toolchain/check/testdata/impl/lookup/instance_method.carbon
@@ -51,14 +51,7 @@ fn F(c: C) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/impl/redeclaration.carbon b/toolchain/check/testdata/impl/redeclaration.carbon
index e4572c4c2308..3f571370b059 100644
--- a/toolchain/check/testdata/impl/redeclaration.carbon
+++ b/toolchain/check/testdata/impl/redeclaration.carbon
@@ -36,14 +36,7 @@ impl i32 as I {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/index/array_element_access.carbon b/toolchain/check/testdata/index/array_element_access.carbon
index d3c49e0226c4..f2b3fdd6ebea 100644
--- a/toolchain/check/testdata/index/array_element_access.carbon
+++ b/toolchain/check/testdata/index/array_element_access.carbon
@@ -34,14 +34,7 @@ var d: i32 = a[b];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/index/expr_category.carbon b/toolchain/check/testdata/index/expr_category.carbon
index bf2154e8b299..d48eb5dad949 100644
--- a/toolchain/check/testdata/index/expr_category.carbon
+++ b/toolchain/check/testdata/index/expr_category.carbon
@@ -56,14 +56,7 @@ fn ValueBinding(b: [i32; 3]) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/index/fail_array_large_index.carbon b/toolchain/check/testdata/index/fail_array_large_index.carbon
index dfbf2dcf9f49..d760e91eb00e 100644
--- a/toolchain/check/testdata/index/fail_array_large_index.carbon
+++ b/toolchain/check/testdata/index/fail_array_large_index.carbon
@@ -41,14 +41,7 @@ var c: i32 = a[0x7FFF_FFFF];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/index/fail_array_non_int_indexing.carbon b/toolchain/check/testdata/index/fail_array_non_int_indexing.carbon
index 5ea860ef26fd..fef81d4cc201 100644
--- a/toolchain/check/testdata/index/fail_array_non_int_indexing.carbon
+++ b/toolchain/check/testdata/index/fail_array_non_int_indexing.carbon
@@ -55,14 +55,7 @@ var b: i32 = a[2.6];
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/index/fail_array_out_of_bound_access.carbon b/toolchain/check/testdata/index/fail_array_out_of_bound_access.carbon
index 180b668d7684..5b2d24d14a28 100644
--- a/toolchain/check/testdata/index/fail_array_out_of_bound_access.carbon
+++ b/toolchain/check/testdata/index/fail_array_out_of_bound_access.carbon
@@ -33,14 +33,7 @@ var b: i32 = a[1];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/index/fail_expr_category.carbon b/toolchain/check/testdata/index/fail_expr_category.carbon
index 21ccd85db57c..744bf736c911 100644
--- a/toolchain/check/testdata/index/fail_expr_category.carbon
+++ b/toolchain/check/testdata/index/fail_expr_category.carbon
@@ -58,14 +58,7 @@ fn G(b: [i32; 3]) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/index/fail_invalid_base.carbon b/toolchain/check/testdata/index/fail_invalid_base.carbon
index 050d751a6776..128c7658cdc2 100644
--- a/toolchain/check/testdata/index/fail_invalid_base.carbon
+++ b/toolchain/check/testdata/index/fail_invalid_base.carbon
@@ -67,14 +67,7 @@ var d: i32 = {.a: i32, .b: i32}[0];
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .IndexWith = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %IndexWith.type.1 = import_ref Core//prelude/operators/index, inst+13, loaded [template = constants.%IndexWith]
diff --git a/toolchain/check/testdata/index/fail_name_not_found.carbon b/toolchain/check/testdata/index/fail_name_not_found.carbon
index 4ddbe19980e7..62f11aba9715 100644
--- a/toolchain/check/testdata/index/fail_name_not_found.carbon
+++ b/toolchain/check/testdata/index/fail_name_not_found.carbon
@@ -30,14 +30,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/index/fail_negative_indexing.carbon b/toolchain/check/testdata/index/fail_negative_indexing.carbon
index 61999cd80835..0b784a3dba21 100644
--- a/toolchain/check/testdata/index/fail_negative_indexing.carbon
+++ b/toolchain/check/testdata/index/fail_negative_indexing.carbon
@@ -43,14 +43,7 @@ var d: i32 = c[-10];
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Negate = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Core//prelude/operators/arithmetic, inst+85, loaded [template = constants.%Negate.type]
diff --git a/toolchain/check/testdata/index/fail_non_tuple_access.carbon b/toolchain/check/testdata/index/fail_non_tuple_access.carbon
index 54fe5543e5db..499c6d4f7474 100644
--- a/toolchain/check/testdata/index/fail_non_tuple_access.carbon
+++ b/toolchain/check/testdata/index/fail_non_tuple_access.carbon
@@ -42,14 +42,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .IndexWith = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %IndexWith.type.1 = import_ref Core//prelude/operators/index, inst+13, loaded [template = constants.%IndexWith]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/index, inst+22, unloaded
diff --git a/toolchain/check/testdata/interface/assoc_const.carbon b/toolchain/check/testdata/interface/assoc_const.carbon
index 065ed6b18205..4f14c2fe5447 100644
--- a/toolchain/check/testdata/interface/assoc_const.carbon
+++ b/toolchain/check/testdata/interface/assoc_const.carbon
@@ -31,14 +31,7 @@ interface I {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/interface/fail_assoc_const_bad_default.carbon b/toolchain/check/testdata/interface/fail_assoc_const_bad_default.carbon
index ab316921cf15..717b7e6755f8 100644
--- a/toolchain/check/testdata/interface/fail_assoc_const_bad_default.carbon
+++ b/toolchain/check/testdata/interface/fail_assoc_const_bad_default.carbon
@@ -50,14 +50,7 @@ interface I {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/interface/fail_todo_assoc_const_default.carbon b/toolchain/check/testdata/interface/fail_todo_assoc_const_default.carbon
index 4566a48a1ff1..ea082b115ed3 100644
--- a/toolchain/check/testdata/interface/fail_todo_assoc_const_default.carbon
+++ b/toolchain/check/testdata/interface/fail_todo_assoc_const_default.carbon
@@ -41,14 +41,7 @@ interface I {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/interface/fail_todo_define_default_fn_inline.carbon b/toolchain/check/testdata/interface/fail_todo_define_default_fn_inline.carbon
index 12176afd7f14..003cd61f4e5c 100644
--- a/toolchain/check/testdata/interface/fail_todo_define_default_fn_inline.carbon
+++ b/toolchain/check/testdata/interface/fail_todo_define_default_fn_inline.carbon
@@ -43,14 +43,7 @@ interface Interface {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/interface/fail_todo_define_default_fn_out_of_line.carbon b/toolchain/check/testdata/interface/fail_todo_define_default_fn_out_of_line.carbon
index a671618a27d1..e1c11abed827 100644
--- a/toolchain/check/testdata/interface/fail_todo_define_default_fn_out_of_line.carbon
+++ b/toolchain/check/testdata/interface/fail_todo_define_default_fn_out_of_line.carbon
@@ -89,14 +89,7 @@ fn Interface.C.F[self: Self](U:! type, u: U) -> U { return u; }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -227,14 +220,7 @@ fn Interface.C.F[self: Self](U:! type, u: U) -> U { return u; }
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/interface/todo_define_not_default.carbon b/toolchain/check/testdata/interface/todo_define_not_default.carbon
index 09dfb2bf42b3..9fda4b0d2335 100644
--- a/toolchain/check/testdata/interface/todo_define_not_default.carbon
+++ b/toolchain/check/testdata/interface/todo_define_not_default.carbon
@@ -48,14 +48,7 @@ interface I {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/ir/duplicate_name_same_line.carbon b/toolchain/check/testdata/ir/duplicate_name_same_line.carbon
index 18f046ff1ab0..7cc5d013c96b 100644
--- a/toolchain/check/testdata/ir/duplicate_name_same_line.carbon
+++ b/toolchain/check/testdata/ir/duplicate_name_same_line.carbon
@@ -27,14 +27,7 @@ fn A() { if (true) { var n: i32 = 1; } if (true) { var n: i32 = 2; } }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/compile_time_bindings.carbon b/toolchain/check/testdata/let/compile_time_bindings.carbon
index a5976c9a5d03..da57fffb6b10 100644
--- a/toolchain/check/testdata/let/compile_time_bindings.carbon
+++ b/toolchain/check/testdata/let/compile_time_bindings.carbon
@@ -177,14 +177,7 @@ impl i32 as Empty {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -242,14 +235,7 @@ impl i32 as Empty {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -318,14 +304,7 @@ impl i32 as Empty {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -503,14 +482,7 @@ impl i32 as Empty {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -568,14 +540,7 @@ impl i32 as Empty {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -629,14 +594,7 @@ impl i32 as Empty {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -718,14 +676,7 @@ impl i32 as Empty {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
@@ -861,14 +812,7 @@ impl i32 as Empty {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -921,14 +865,7 @@ impl i32 as Empty {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -979,14 +916,7 @@ impl i32 as Empty {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/convert.carbon b/toolchain/check/testdata/let/convert.carbon
index 581d016d22f0..2c2aff05ec6a 100644
--- a/toolchain/check/testdata/let/convert.carbon
+++ b/toolchain/check/testdata/let/convert.carbon
@@ -36,14 +36,7 @@ fn F() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/fail_duplicate_decl.carbon b/toolchain/check/testdata/let/fail_duplicate_decl.carbon
index 71a180e6f583..1ff585c4f5d2 100644
--- a/toolchain/check/testdata/let/fail_duplicate_decl.carbon
+++ b/toolchain/check/testdata/let/fail_duplicate_decl.carbon
@@ -35,14 +35,7 @@ fn F() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/fail_generic.carbon b/toolchain/check/testdata/let/fail_generic.carbon
index a32c62961301..0cbda65bde8f 100644
--- a/toolchain/check/testdata/let/fail_generic.carbon
+++ b/toolchain/check/testdata/let/fail_generic.carbon
@@ -67,14 +67,7 @@ fn F(a: i32) -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/let/fail_generic_import.carbon b/toolchain/check/testdata/let/fail_generic_import.carbon
index 85c02b03a628..9ee65fc56d73 100644
--- a/toolchain/check/testdata/let/fail_generic_import.carbon
+++ b/toolchain/check/testdata/let/fail_generic_import.carbon
@@ -40,14 +40,7 @@ let a: T = 0;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -81,14 +74,7 @@ let a: T = 0;
 // CHECK:STDOUT:   %import_ref: type = import_ref Implicit//default, inst+3, loaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/let/fail_missing_value.carbon b/toolchain/check/testdata/let/fail_missing_value.carbon
index 2960f8b9ab37..65bf5c1e5da2 100644
--- a/toolchain/check/testdata/let/fail_missing_value.carbon
+++ b/toolchain/check/testdata/let/fail_missing_value.carbon
@@ -35,14 +35,7 @@ fn F() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/fail_modifiers.carbon b/toolchain/check/testdata/let/fail_modifiers.carbon
index c3a443b8f7b9..fa39037c0fb9 100644
--- a/toolchain/check/testdata/let/fail_modifiers.carbon
+++ b/toolchain/check/testdata/let/fail_modifiers.carbon
@@ -96,14 +96,7 @@ protected protected let i: i32 = 1;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/fail_use_in_init.carbon b/toolchain/check/testdata/let/fail_use_in_init.carbon
index d6f26b899b03..ae317186b797 100644
--- a/toolchain/check/testdata/let/fail_use_in_init.carbon
+++ b/toolchain/check/testdata/let/fail_use_in_init.carbon
@@ -29,14 +29,7 @@ fn F() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/generic.carbon b/toolchain/check/testdata/let/generic.carbon
index a1768753b480..19e724c38d25 100644
--- a/toolchain/check/testdata/let/generic.carbon
+++ b/toolchain/check/testdata/let/generic.carbon
@@ -30,14 +30,7 @@ fn F() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/generic_import.carbon b/toolchain/check/testdata/let/generic_import.carbon
index 525d94eb78c0..3f9352cd498a 100644
--- a/toolchain/check/testdata/let/generic_import.carbon
+++ b/toolchain/check/testdata/let/generic_import.carbon
@@ -44,14 +44,7 @@ var b: T = *a;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -81,14 +74,7 @@ var b: T = *a;
 // CHECK:STDOUT:   %import_ref: type = import_ref Implicit//default, inst+3, loaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/let/global.carbon b/toolchain/check/testdata/let/global.carbon
index a324f80164e8..de774c37e7ff 100644
--- a/toolchain/check/testdata/let/global.carbon
+++ b/toolchain/check/testdata/let/global.carbon
@@ -27,14 +27,7 @@ fn F() -> i32 { return n; }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/local.carbon b/toolchain/check/testdata/let/local.carbon
index 78c90d6b6bbd..05438fcbaf84 100644
--- a/toolchain/check/testdata/let/local.carbon
+++ b/toolchain/check/testdata/let/local.carbon
@@ -27,14 +27,7 @@ fn F(a: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/let/shadowed_decl.carbon b/toolchain/check/testdata/let/shadowed_decl.carbon
index 5179ef56127f..baaf9e427c44 100644
--- a/toolchain/check/testdata/let/shadowed_decl.carbon
+++ b/toolchain/check/testdata/let/shadowed_decl.carbon
@@ -29,14 +29,7 @@ fn F(a: i32) -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/namespace/add_to_import.carbon b/toolchain/check/testdata/namespace/add_to_import.carbon
index 6d0d2615a92f..f7908d5d59dc 100644
--- a/toolchain/check/testdata/namespace/add_to_import.carbon
+++ b/toolchain/check/testdata/namespace/add_to_import.carbon
@@ -27,14 +27,7 @@ var a: i32 = NS.A();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -66,14 +59,7 @@ var a: i32 = NS.A();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/namespace/alias.carbon b/toolchain/check/testdata/namespace/alias.carbon
index 79098248a481..f1ac1599eb87 100644
--- a/toolchain/check/testdata/namespace/alias.carbon
+++ b/toolchain/check/testdata/namespace/alias.carbon
@@ -39,14 +39,7 @@ fn D() -> i32 { return C(); }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/namespace/fail_conflict_after_merge.carbon b/toolchain/check/testdata/namespace/fail_conflict_after_merge.carbon
index 222064a71ba1..320a612c4617 100644
--- a/toolchain/check/testdata/namespace/fail_conflict_after_merge.carbon
+++ b/toolchain/check/testdata/namespace/fail_conflict_after_merge.carbon
@@ -52,14 +52,7 @@ fn NS();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -87,14 +80,7 @@ fn NS();
 // CHECK:STDOUT:   %NS: <namespace> = namespace %import_ref, [template] {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_first.carbon b/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_first.carbon
index 80038c06d0ae..0768c9fd2dc0 100644
--- a/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_first.carbon
+++ b/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_first.carbon
@@ -36,14 +36,7 @@ fn NS.Foo();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -73,14 +66,7 @@ fn NS.Foo();
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_nested.carbon b/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_nested.carbon
index abc839537a3f..fd68a902aa0b 100644
--- a/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_nested.carbon
+++ b/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_nested.carbon
@@ -38,14 +38,7 @@ fn Other.Nested.F();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -69,14 +62,7 @@ fn Other.Nested.F();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Other: <namespace> = namespace file.%Other.import, [template] {
 // CHECK:STDOUT:     .Nested = %Nested
diff --git a/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_second.carbon b/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_second.carbon
index 75014c3914b5..49db13ae0980 100644
--- a/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_second.carbon
+++ b/toolchain/check/testdata/namespace/fail_conflict_imported_namespace_second.carbon
@@ -50,14 +50,7 @@ fn NS.Foo();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -86,14 +79,7 @@ fn NS.Foo();
 // CHECK:STDOUT:   %import_ref: %NS.type = import_ref Example//fn, inst+3, loaded [template = constants.%NS]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_first.carbon b/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_first.carbon
index a4211b651e5f..537fe09e6461 100644
--- a/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_first.carbon
+++ b/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_first.carbon
@@ -49,14 +49,7 @@ fn NS.Bar() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -88,14 +81,7 @@ fn NS.Bar() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -131,14 +117,7 @@ fn NS.Bar() {}
 // CHECK:STDOUT:   %import_ref.3 = import_ref Example//fn, inst+3, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_second.carbon b/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_second.carbon
index 03996a387434..e2a46f76f78c 100644
--- a/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_second.carbon
+++ b/toolchain/check/testdata/namespace/fail_conflict_in_imports_namespace_second.carbon
@@ -49,14 +49,7 @@ fn NS.Bar() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -85,14 +78,7 @@ fn NS.Bar() {}
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -131,14 +117,7 @@ fn NS.Bar() {}
 // CHECK:STDOUT:   %import_ref.3 = import_ref Example//namespace, inst+4, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/fail_decl_in_alias.carbon b/toolchain/check/testdata/namespace/fail_decl_in_alias.carbon
index b6ea14f15661..a5ffd15cc4a7 100644
--- a/toolchain/check/testdata/namespace/fail_decl_in_alias.carbon
+++ b/toolchain/check/testdata/namespace/fail_decl_in_alias.carbon
@@ -36,14 +36,7 @@ fn ns.A() -> i32 { return 0; }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/namespace/fail_duplicate.carbon b/toolchain/check/testdata/namespace/fail_duplicate.carbon
index ff77cad2016e..a9b5873809e5 100644
--- a/toolchain/check/testdata/namespace/fail_duplicate.carbon
+++ b/toolchain/check/testdata/namespace/fail_duplicate.carbon
@@ -33,14 +33,7 @@ fn Foo.Baz() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/fail_modifiers.carbon b/toolchain/check/testdata/namespace/fail_modifiers.carbon
index 1056980b1073..966f8f6a03c4 100644
--- a/toolchain/check/testdata/namespace/fail_modifiers.carbon
+++ b/toolchain/check/testdata/namespace/fail_modifiers.carbon
@@ -59,14 +59,7 @@ extern namespace C;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/fail_params.carbon b/toolchain/check/testdata/namespace/fail_params.carbon
index b7986ca7feb3..71a25e58ba80 100644
--- a/toolchain/check/testdata/namespace/fail_params.carbon
+++ b/toolchain/check/testdata/namespace/fail_params.carbon
@@ -57,14 +57,7 @@ fn D(T:! type).F() {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/namespace/fail_unresolved_scope.carbon b/toolchain/check/testdata/namespace/fail_unresolved_scope.carbon
index fe4fe26fc231..6af7bae82fec 100644
--- a/toolchain/check/testdata/namespace/fail_unresolved_scope.carbon
+++ b/toolchain/check/testdata/namespace/fail_unresolved_scope.carbon
@@ -25,14 +25,7 @@ fn Foo.Baz() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/function.carbon b/toolchain/check/testdata/namespace/function.carbon
index f380af262cff..632801f7e475 100644
--- a/toolchain/check/testdata/namespace/function.carbon
+++ b/toolchain/check/testdata/namespace/function.carbon
@@ -36,14 +36,7 @@ fn Bar() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/imported.carbon b/toolchain/check/testdata/namespace/imported.carbon
index 8e6315fe1043..27e852018c15 100644
--- a/toolchain/check/testdata/namespace/imported.carbon
+++ b/toolchain/check/testdata/namespace/imported.carbon
@@ -41,14 +41,7 @@ var package_b: () = package.NS.ChildNS.B();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -97,14 +90,7 @@ var package_b: () = package.NS.ChildNS.B();
 // CHECK:STDOUT:   %import_ref.4: %B.type = import_ref Implicit//default, inst+9, loaded [template = constants.%B]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/imported_indirect.carbon b/toolchain/check/testdata/namespace/imported_indirect.carbon
index 453bd1df3af0..31161b39d05b 100644
--- a/toolchain/check/testdata/namespace/imported_indirect.carbon
+++ b/toolchain/check/testdata/namespace/imported_indirect.carbon
@@ -47,14 +47,7 @@ var e: () = A.B.C.D();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -76,14 +69,7 @@ var e: () = A.B.C.D();
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -110,14 +96,7 @@ var e: () = A.B.C.D();
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -154,14 +133,7 @@ var e: () = A.B.C.D();
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -204,14 +176,7 @@ var e: () = A.B.C.D();
 // CHECK:STDOUT:   %import_ref.4: %D.type = import_ref Same//d, inst+10, loaded [template = constants.%D]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/merging.carbon b/toolchain/check/testdata/namespace/merging.carbon
index 3aa3a651be99..1b2bd4e0fe50 100644
--- a/toolchain/check/testdata/namespace/merging.carbon
+++ b/toolchain/check/testdata/namespace/merging.carbon
@@ -57,14 +57,7 @@ fn Run() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -98,14 +91,7 @@ fn Run() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -166,14 +152,7 @@ fn Run() {
 // CHECK:STDOUT:   %import_ref.4: %B2.type = import_ref Example//b, inst+10, loaded [template = constants.%B2]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/merging_with_indirections.carbon b/toolchain/check/testdata/namespace/merging_with_indirections.carbon
index b5dcf4f5679c..c8f717179e03 100644
--- a/toolchain/check/testdata/namespace/merging_with_indirections.carbon
+++ b/toolchain/check/testdata/namespace/merging_with_indirections.carbon
@@ -52,14 +52,7 @@ fn Run() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -105,14 +98,7 @@ fn Run() {
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Other//a, inst+4, loaded [template = constants.%A]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.3 = import_ref Other//a, inst+5, unloaded
 // CHECK:STDOUT: }
@@ -178,14 +164,7 @@ fn Run() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Other: <namespace> = namespace file.%Other.import, [template] {
 // CHECK:STDOUT:     .F = %import_ref.1
diff --git a/toolchain/check/testdata/namespace/nested.carbon b/toolchain/check/testdata/namespace/nested.carbon
index f5a2dc339923..e6ec87def785 100644
--- a/toolchain/check/testdata/namespace/nested.carbon
+++ b/toolchain/check/testdata/namespace/nested.carbon
@@ -31,14 +31,7 @@ fn Foo.Bar.Baz() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/namespace/shadow.carbon b/toolchain/check/testdata/namespace/shadow.carbon
index 6606f92948ba..1029328e75df 100644
--- a/toolchain/check/testdata/namespace/shadow.carbon
+++ b/toolchain/check/testdata/namespace/shadow.carbon
@@ -47,14 +47,7 @@ fn N.M.B() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/namespace/unqualified_lookup.carbon b/toolchain/check/testdata/namespace/unqualified_lookup.carbon
index 2d44de93f9f5..94e20cfe1f56 100644
--- a/toolchain/check/testdata/namespace/unqualified_lookup.carbon
+++ b/toolchain/check/testdata/namespace/unqualified_lookup.carbon
@@ -51,14 +51,7 @@ fn OuterN.InnerN.CallABC() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/operators/builtin/and.carbon b/toolchain/check/testdata/operators/builtin/and.carbon
index 403607b1850b..99f40c2163de 100644
--- a/toolchain/check/testdata/operators/builtin/and.carbon
+++ b/toolchain/check/testdata/operators/builtin/and.carbon
@@ -51,14 +51,7 @@ fn PartialConstant(x: bool) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/operators/builtin/assignment.carbon b/toolchain/check/testdata/operators/builtin/assignment.carbon
index 49ca47f31108..241579731c58 100644
--- a/toolchain/check/testdata/operators/builtin/assignment.carbon
+++ b/toolchain/check/testdata/operators/builtin/assignment.carbon
@@ -58,14 +58,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/operators/builtin/fail_and_or_not_in_function.carbon b/toolchain/check/testdata/operators/builtin/fail_and_or_not_in_function.carbon
index f361994cdc8a..c1d1f1c5d848 100644
--- a/toolchain/check/testdata/operators/builtin/fail_and_or_not_in_function.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_and_or_not_in_function.carbon
@@ -64,14 +64,7 @@ var or_: F(true or true);
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     .Float = %import_ref.3
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/operators/builtin/fail_and_or_partial_constant.carbon b/toolchain/check/testdata/operators/builtin/fail_and_or_partial_constant.carbon
index 3173b750c00f..04d4778a7715 100644
--- a/toolchain/check/testdata/operators/builtin/fail_and_or_partial_constant.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_and_or_partial_constant.carbon
@@ -59,14 +59,7 @@ fn KnownValueButNonConstantCondition(x: bool) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
@@ -167,14 +160,7 @@ fn KnownValueButNonConstantCondition(x: bool) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/operators/builtin/fail_assignment_to_error.carbon b/toolchain/check/testdata/operators/builtin/fail_assignment_to_error.carbon
index cc3a3ff85497..2dd034679761 100644
--- a/toolchain/check/testdata/operators/builtin/fail_assignment_to_error.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_assignment_to_error.carbon
@@ -32,14 +32,7 @@ fn Main() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/operators/builtin/fail_assignment_to_non_assignable.carbon b/toolchain/check/testdata/operators/builtin/fail_assignment_to_non_assignable.carbon
index 594ad9e83396..f25231e4e3f5 100644
--- a/toolchain/check/testdata/operators/builtin/fail_assignment_to_non_assignable.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_assignment_to_non_assignable.carbon
@@ -88,14 +88,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/operators/builtin/fail_redundant_compound_access.carbon b/toolchain/check/testdata/operators/builtin/fail_redundant_compound_access.carbon
index 87b303a2ed9d..643a1e13ecc9 100644
--- a/toolchain/check/testdata/operators/builtin/fail_redundant_compound_access.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_redundant_compound_access.carbon
@@ -41,14 +41,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/operators/builtin/fail_type_mismatch.carbon b/toolchain/check/testdata/operators/builtin/fail_type_mismatch.carbon
index 4935648b0f33..8abab4420c60 100644
--- a/toolchain/check/testdata/operators/builtin/fail_type_mismatch.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_type_mismatch.carbon
@@ -51,14 +51,7 @@ fn Main() {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/operators/builtin/fail_type_mismatch_assignment.carbon b/toolchain/check/testdata/operators/builtin/fail_type_mismatch_assignment.carbon
index 721f95ce6c64..025b9f515a8b 100644
--- a/toolchain/check/testdata/operators/builtin/fail_type_mismatch_assignment.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_type_mismatch_assignment.carbon
@@ -53,14 +53,7 @@ fn Main() {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/operators/builtin/fail_type_mismatch_once.carbon b/toolchain/check/testdata/operators/builtin/fail_type_mismatch_once.carbon
index c16ec2d5a265..9c24f2ee6bd4 100644
--- a/toolchain/check/testdata/operators/builtin/fail_type_mismatch_once.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_type_mismatch_once.carbon
@@ -44,14 +44,7 @@ fn Main() -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Add = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Core//prelude/operators/arithmetic, inst+1, loaded [template = constants.%Add.type]
diff --git a/toolchain/check/testdata/operators/builtin/fail_unimplemented_op.carbon b/toolchain/check/testdata/operators/builtin/fail_unimplemented_op.carbon
index 698620e7a2cb..f1df40894a55 100644
--- a/toolchain/check/testdata/operators/builtin/fail_unimplemented_op.carbon
+++ b/toolchain/check/testdata/operators/builtin/fail_unimplemented_op.carbon
@@ -38,14 +38,7 @@ fn Main() -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Add = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Core//prelude/operators/arithmetic, inst+1, loaded [template = constants.%Add.type]
diff --git a/toolchain/check/testdata/operators/builtin/or.carbon b/toolchain/check/testdata/operators/builtin/or.carbon
index cc0018d86223..1efef2da5833 100644
--- a/toolchain/check/testdata/operators/builtin/or.carbon
+++ b/toolchain/check/testdata/operators/builtin/or.carbon
@@ -51,14 +51,7 @@ fn PartialConstant(x: bool) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/operators/builtin/unary_op.carbon b/toolchain/check/testdata/operators/builtin/unary_op.carbon
index b53bfd00739d..89006de562c3 100644
--- a/toolchain/check/testdata/operators/builtin/unary_op.carbon
+++ b/toolchain/check/testdata/operators/builtin/unary_op.carbon
@@ -39,14 +39,7 @@ fn Constant() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/operators/overloaded/add.carbon b/toolchain/check/testdata/operators/overloaded/add.carbon
index 7b92b0497814..fd123025b7a6 100644
--- a/toolchain/check/testdata/operators/overloaded/add.carbon
+++ b/toolchain/check/testdata/operators/overloaded/add.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .Add = %import_ref.1
 // CHECK:STDOUT:     .AddAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+1, loaded [template = constants.%Add.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+3, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/bit_and.carbon b/toolchain/check/testdata/operators/overloaded/bit_and.carbon
index c7313f12ebc0..6c01b0e50518 100644
--- a/toolchain/check/testdata/operators/overloaded/bit_and.carbon
+++ b/toolchain/check/testdata/operators/overloaded/bit_and.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .BitAnd = %import_ref.1
 // CHECK:STDOUT:     .BitAndAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/bitwise, inst+27, loaded [template = constants.%BitAnd.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/bitwise, inst+29, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/bit_complement.carbon b/toolchain/check/testdata/operators/overloaded/bit_complement.carbon
index 69708216e829..d6c5467b2476 100644
--- a/toolchain/check/testdata/operators/overloaded/bit_complement.carbon
+++ b/toolchain/check/testdata/operators/overloaded/bit_complement.carbon
@@ -50,14 +50,7 @@ fn TestOp(a: C) -> C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .BitComplement = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/bitwise, inst+1, loaded [template = constants.%BitComplement.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/bitwise, inst+3, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/bit_or.carbon b/toolchain/check/testdata/operators/overloaded/bit_or.carbon
index 44cdcfe8d807..6d87412bf7f0 100644
--- a/toolchain/check/testdata/operators/overloaded/bit_or.carbon
+++ b/toolchain/check/testdata/operators/overloaded/bit_or.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .BitOr = %import_ref.1
 // CHECK:STDOUT:     .BitOrAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/bitwise, inst+88, loaded [template = constants.%BitOr.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/bitwise, inst+90, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/bit_xor.carbon b/toolchain/check/testdata/operators/overloaded/bit_xor.carbon
index cdebb07db38f..4b9a104f31d6 100644
--- a/toolchain/check/testdata/operators/overloaded/bit_xor.carbon
+++ b/toolchain/check/testdata/operators/overloaded/bit_xor.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .BitXor = %import_ref.1
 // CHECK:STDOUT:     .BitXorAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/bitwise, inst+149, loaded [template = constants.%BitXor.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/bitwise, inst+151, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/dec.carbon b/toolchain/check/testdata/operators/overloaded/dec.carbon
index f71bffafc2e1..fa9e48cb23ef 100644
--- a/toolchain/check/testdata/operators/overloaded/dec.carbon
+++ b/toolchain/check/testdata/operators/overloaded/dec.carbon
@@ -51,14 +51,7 @@ fn TestOp() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Dec = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+171, loaded [template = constants.%Dec.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+173, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/div.carbon b/toolchain/check/testdata/operators/overloaded/div.carbon
index 7e5f7376df7a..1e392eed9238 100644
--- a/toolchain/check/testdata/operators/overloaded/div.carbon
+++ b/toolchain/check/testdata/operators/overloaded/div.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .Div = %import_ref.1
 // CHECK:STDOUT:     .DivAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+254, loaded [template = constants.%Div.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+256, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/eq.carbon b/toolchain/check/testdata/operators/overloaded/eq.carbon
index e5668aebe782..833cd1502bfe 100644
--- a/toolchain/check/testdata/operators/overloaded/eq.carbon
+++ b/toolchain/check/testdata/operators/overloaded/eq.carbon
@@ -118,14 +118,7 @@ fn TestLhsBad(a: D, b: C) -> bool {
 // CHECK:STDOUT:     .Eq = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/comparison, inst+3, loaded [template = constants.%Eq.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/comparison, inst+5, unloaded
@@ -349,14 +342,7 @@ fn TestLhsBad(a: D, b: C) -> bool {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Eq = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Core//prelude/operators/comparison, inst+3, loaded [template = constants.%Eq.type]
@@ -528,14 +514,7 @@ fn TestLhsBad(a: D, b: C) -> bool {
 // CHECK:STDOUT:     .Bool = %import_ref.7
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.9
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/comparison, inst+3, loaded [template = constants.%Eq.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/comparison, inst+5, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/fail_assign_non_ref.carbon b/toolchain/check/testdata/operators/overloaded/fail_assign_non_ref.carbon
index 45923fde941d..408c6ef268c9 100644
--- a/toolchain/check/testdata/operators/overloaded/fail_assign_non_ref.carbon
+++ b/toolchain/check/testdata/operators/overloaded/fail_assign_non_ref.carbon
@@ -80,14 +80,7 @@ fn TestAddAssignNonRef(a: C, b: C) {
 // CHECK:STDOUT:     .Inc = %import_ref.1
 // CHECK:STDOUT:     .AddAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+63, loaded [template = constants.%Inc.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+65, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/fail_no_impl.carbon b/toolchain/check/testdata/operators/overloaded/fail_no_impl.carbon
index 1264b65627b3..6c85a387278c 100644
--- a/toolchain/check/testdata/operators/overloaded/fail_no_impl.carbon
+++ b/toolchain/check/testdata/operators/overloaded/fail_no_impl.carbon
@@ -91,14 +91,7 @@ fn TestRef(b: C) {
 // CHECK:STDOUT:     .AddAssign = %import_ref.11
 // CHECK:STDOUT:     .Inc = %import_ref.16
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+85, loaded [template = constants.%Negate.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+87, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/fail_no_impl_for_arg.carbon b/toolchain/check/testdata/operators/overloaded/fail_no_impl_for_arg.carbon
index e65ffb34025d..c0e5c44173c4 100644
--- a/toolchain/check/testdata/operators/overloaded/fail_no_impl_for_arg.carbon
+++ b/toolchain/check/testdata/operators/overloaded/fail_no_impl_for_arg.carbon
@@ -107,14 +107,7 @@ fn TestAssign(b: D) {
 // CHECK:STDOUT:     .AddAssign = %import_ref.5
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.10
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+1, loaded [template = constants.%Add.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+3, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/implicit_as.carbon b/toolchain/check/testdata/operators/overloaded/implicit_as.carbon
index 53ff999e8ede..bf116f85f13d 100644
--- a/toolchain/check/testdata/operators/overloaded/implicit_as.carbon
+++ b/toolchain/check/testdata/operators/overloaded/implicit_as.carbon
@@ -90,14 +90,7 @@ fn Test() {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/operators/overloaded/inc.carbon b/toolchain/check/testdata/operators/overloaded/inc.carbon
index e1f5bf6efb03..39d03ab96443 100644
--- a/toolchain/check/testdata/operators/overloaded/inc.carbon
+++ b/toolchain/check/testdata/operators/overloaded/inc.carbon
@@ -51,14 +51,7 @@ fn TestOp() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Inc = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+63, loaded [template = constants.%Inc.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+65, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/index.carbon b/toolchain/check/testdata/operators/overloaded/index.carbon
index cc785d451bdf..982ee0bac539 100644
--- a/toolchain/check/testdata/operators/overloaded/index.carbon
+++ b/toolchain/check/testdata/operators/overloaded/index.carbon
@@ -117,14 +117,7 @@ let x: i32 = c[0];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .IndexWith = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %IndexWith.type.1 = import_ref Core//prelude/operators/index, inst+13, loaded [template = constants.%IndexWith]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/index, inst+22, unloaded
@@ -370,14 +363,7 @@ let x: i32 = c[0];
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .IndexWith = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %IndexWith.type.1 = import_ref Core//prelude/operators/index, inst+13, loaded [template = constants.%IndexWith]
@@ -629,14 +615,7 @@ let x: i32 = c[0];
 // CHECK:STDOUT:     .IndexWith = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.6
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %IndexWith.type.1 = import_ref Core//prelude/operators/index, inst+13, loaded [template = constants.%IndexWith]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/index, inst+22, unloaded
@@ -935,14 +914,7 @@ let x: i32 = c[0];
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .IndexWith = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %IndexWith.type.1 = import_ref Core//prelude/operators/index, inst+13, loaded [template = constants.%IndexWith]
diff --git a/toolchain/check/testdata/operators/overloaded/left_shift.carbon b/toolchain/check/testdata/operators/overloaded/left_shift.carbon
index eb39ae99dbe7..c24a2e4488f0 100644
--- a/toolchain/check/testdata/operators/overloaded/left_shift.carbon
+++ b/toolchain/check/testdata/operators/overloaded/left_shift.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .LeftShift = %import_ref.1
 // CHECK:STDOUT:     .LeftShiftAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/bitwise, inst+210, loaded [template = constants.%LeftShift.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/bitwise, inst+212, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/mod.carbon b/toolchain/check/testdata/operators/overloaded/mod.carbon
index 6f33452d0ffc..0640e00a0d03 100644
--- a/toolchain/check/testdata/operators/overloaded/mod.carbon
+++ b/toolchain/check/testdata/operators/overloaded/mod.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .Mod = %import_ref.1
 // CHECK:STDOUT:     .ModAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+315, loaded [template = constants.%Mod.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+317, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/mul.carbon b/toolchain/check/testdata/operators/overloaded/mul.carbon
index a3a87e03f4c3..5f1ec99ead57 100644
--- a/toolchain/check/testdata/operators/overloaded/mul.carbon
+++ b/toolchain/check/testdata/operators/overloaded/mul.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .Mul = %import_ref.1
 // CHECK:STDOUT:     .MulAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+193, loaded [template = constants.%Mul.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+195, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/negate.carbon b/toolchain/check/testdata/operators/overloaded/negate.carbon
index 623f469c548c..718a07c032a5 100644
--- a/toolchain/check/testdata/operators/overloaded/negate.carbon
+++ b/toolchain/check/testdata/operators/overloaded/negate.carbon
@@ -50,14 +50,7 @@ fn TestOp(a: C) -> C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Negate = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+85, loaded [template = constants.%Negate.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+87, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/ordered.carbon b/toolchain/check/testdata/operators/overloaded/ordered.carbon
index 0db0af9b35c4..15c449736ba0 100644
--- a/toolchain/check/testdata/operators/overloaded/ordered.carbon
+++ b/toolchain/check/testdata/operators/overloaded/ordered.carbon
@@ -126,14 +126,7 @@ fn TestGreaterEqual(a: D, b: D) -> bool {
 // CHECK:STDOUT:     .Ordered = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.11
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/comparison, inst+70, loaded [template = constants.%Ordered.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/comparison, inst+72, unloaded
@@ -519,14 +512,7 @@ fn TestGreaterEqual(a: D, b: D) -> bool {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Ordered = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Core//prelude/operators/comparison, inst+70, loaded [template = constants.%Ordered.type]
diff --git a/toolchain/check/testdata/operators/overloaded/right_shift.carbon b/toolchain/check/testdata/operators/overloaded/right_shift.carbon
index f3712e6cb39c..d80b2c25154b 100644
--- a/toolchain/check/testdata/operators/overloaded/right_shift.carbon
+++ b/toolchain/check/testdata/operators/overloaded/right_shift.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .RightShift = %import_ref.1
 // CHECK:STDOUT:     .RightShiftAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/bitwise, inst+271, loaded [template = constants.%RightShift.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/bitwise, inst+273, unloaded
diff --git a/toolchain/check/testdata/operators/overloaded/sub.carbon b/toolchain/check/testdata/operators/overloaded/sub.carbon
index 7ebabf2810a7..645f6acead89 100644
--- a/toolchain/check/testdata/operators/overloaded/sub.carbon
+++ b/toolchain/check/testdata/operators/overloaded/sub.carbon
@@ -71,14 +71,7 @@ fn TestAssign(a: C*, b: C) {
 // CHECK:STDOUT:     .Sub = %import_ref.1
 // CHECK:STDOUT:     .SubAssign = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: type = import_ref Core//prelude/operators/arithmetic, inst+110, loaded [template = constants.%Sub.type]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/arithmetic, inst+112, unloaded
diff --git a/toolchain/check/testdata/package_expr/fail_not_found.carbon b/toolchain/check/testdata/package_expr/fail_not_found.carbon
index 628f67cf114a..4e37b725c829 100644
--- a/toolchain/check/testdata/package_expr/fail_not_found.carbon
+++ b/toolchain/check/testdata/package_expr/fail_not_found.carbon
@@ -29,14 +29,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/package_expr/syntax.carbon b/toolchain/check/testdata/package_expr/syntax.carbon
index 1d7d34312a2e..76a7ac306286 100644
--- a/toolchain/check/testdata/package_expr/syntax.carbon
+++ b/toolchain/check/testdata/package_expr/syntax.carbon
@@ -54,14 +54,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -114,14 +107,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -188,14 +174,7 @@ fn Main() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/explicit_imports.carbon b/toolchain/check/testdata/packages/explicit_imports.carbon
index 27cc24e15752..85c1cad2c385 100644
--- a/toolchain/check/testdata/packages/explicit_imports.carbon
+++ b/toolchain/check/testdata/packages/explicit_imports.carbon
@@ -43,14 +43,7 @@ import library "main_lib_api";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -66,14 +59,7 @@ import library "main_lib_api";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -89,14 +75,7 @@ import library "main_lib_api";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -113,14 +92,7 @@ import library "main_lib_api";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Api: <namespace> = namespace file.%Api.import, [template] {
 // CHECK:STDOUT:     import Api//default
@@ -142,14 +114,7 @@ import library "main_lib_api";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -165,14 +130,7 @@ import library "main_lib_api";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_api_not_found.carbon b/toolchain/check/testdata/packages/fail_api_not_found.carbon
index 4ae77761a0f8..1d91169ffe34 100644
--- a/toolchain/check/testdata/packages/fail_api_not_found.carbon
+++ b/toolchain/check/testdata/packages/fail_api_not_found.carbon
@@ -36,14 +36,7 @@ impl library "[[@TEST_NAME]]";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -61,14 +54,7 @@ impl library "[[@TEST_NAME]]";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -86,14 +72,7 @@ impl library "[[@TEST_NAME]]";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_conflict_no_namespaces.carbon b/toolchain/check/testdata/packages/fail_conflict_no_namespaces.carbon
index 01a3bf38b4fb..6ecbfa014a02 100644
--- a/toolchain/check/testdata/packages/fail_conflict_no_namespaces.carbon
+++ b/toolchain/check/testdata/packages/fail_conflict_no_namespaces.carbon
@@ -46,14 +46,7 @@ import library "var";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -80,14 +73,7 @@ import library "var";
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -114,14 +100,7 @@ import library "var";
 // CHECK:STDOUT:   %import_ref.2 = import_ref Example//var, inst+15, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_cycle.carbon b/toolchain/check/testdata/packages/fail_cycle.carbon
index 3baf97fa43cc..abe2a41511cf 100644
--- a/toolchain/check/testdata/packages/fail_cycle.carbon
+++ b/toolchain/check/testdata/packages/fail_cycle.carbon
@@ -60,14 +60,7 @@ import B;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %B: <namespace> = namespace file.%B.import, [template] {
 // CHECK:STDOUT:     has_error
@@ -88,14 +81,7 @@ import B;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %C: <namespace> = namespace file.%C.import, [template] {
 // CHECK:STDOUT:     has_error
@@ -116,14 +102,7 @@ import B;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %A: <namespace> = namespace file.%A.import, [template] {
 // CHECK:STDOUT:     has_error
@@ -144,14 +123,7 @@ import B;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -169,14 +141,7 @@ import B;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %B: <namespace> = namespace file.%B.import, [template] {
 // CHECK:STDOUT:     has_error
diff --git a/toolchain/check/testdata/packages/fail_duplicate_api.carbon b/toolchain/check/testdata/packages/fail_duplicate_api.carbon
index d874cdce8904..d41dd6567424 100644
--- a/toolchain/check/testdata/packages/fail_duplicate_api.carbon
+++ b/toolchain/check/testdata/packages/fail_duplicate_api.carbon
@@ -54,14 +54,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -77,14 +70,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -100,14 +86,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -123,14 +102,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -146,14 +118,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -169,14 +134,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -192,14 +150,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -215,14 +166,7 @@ package Package library "lib";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_extension.carbon b/toolchain/check/testdata/packages/fail_extension.carbon
index 97092740332c..24aa0d805ef1 100644
--- a/toolchain/check/testdata/packages/fail_extension.carbon
+++ b/toolchain/check/testdata/packages/fail_extension.carbon
@@ -89,14 +89,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -112,14 +105,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -135,14 +121,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -158,14 +137,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -183,14 +155,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -206,14 +171,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -231,14 +189,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -254,14 +205,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -279,14 +223,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -302,14 +239,7 @@ impl package SwappedExt;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_import_default.carbon b/toolchain/check/testdata/packages/fail_import_default.carbon
index df53ddcdf1c3..6e76196ab86d 100644
--- a/toolchain/check/testdata/packages/fail_import_default.carbon
+++ b/toolchain/check/testdata/packages/fail_import_default.carbon
@@ -50,14 +50,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -73,14 +66,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -98,14 +84,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -121,14 +100,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_import_invalid.carbon b/toolchain/check/testdata/packages/fail_import_invalid.carbon
index c5d412aea34f..430e14d10cd4 100644
--- a/toolchain/check/testdata/packages/fail_import_invalid.carbon
+++ b/toolchain/check/testdata/packages/fail_import_invalid.carbon
@@ -99,14 +99,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -122,14 +115,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -145,14 +131,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -168,14 +147,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -191,14 +163,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -214,14 +179,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -239,14 +197,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -262,14 +213,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -287,14 +231,7 @@ import ImportNotFound;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %ImportNotFound: <namespace> = namespace file.%ImportNotFound.import, [template] {
 // CHECK:STDOUT:     has_error
diff --git a/toolchain/check/testdata/packages/fail_import_repeat.carbon b/toolchain/check/testdata/packages/fail_import_repeat.carbon
index 647776aa0f43..2fb567ed1fc8 100644
--- a/toolchain/check/testdata/packages/fail_import_repeat.carbon
+++ b/toolchain/check/testdata/packages/fail_import_repeat.carbon
@@ -70,14 +70,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -93,14 +86,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -116,14 +102,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -139,14 +118,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %Api: <namespace> = namespace file.%Api.import, [template] {
 // CHECK:STDOUT:     import Api//default
@@ -169,14 +141,7 @@ import library default;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_import_type_error.carbon b/toolchain/check/testdata/packages/fail_import_type_error.carbon
index f74355006258..f20fd8ae818e 100644
--- a/toolchain/check/testdata/packages/fail_import_type_error.carbon
+++ b/toolchain/check/testdata/packages/fail_import_type_error.carbon
@@ -48,14 +48,7 @@ var d: i32 = d_ref;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -101,14 +94,7 @@ var d: i32 = d_ref;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/packages/fail_name_with_import_failure.carbon b/toolchain/check/testdata/packages/fail_name_with_import_failure.carbon
index 5b9e9fccc879..d7f60e3b2f91 100644
--- a/toolchain/check/testdata/packages/fail_name_with_import_failure.carbon
+++ b/toolchain/check/testdata/packages/fail_name_with_import_failure.carbon
@@ -26,14 +26,7 @@ var a: () = A();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/fail_package_main.carbon b/toolchain/check/testdata/packages/fail_package_main.carbon
index de79e6d05330..fee19e4d79e9 100644
--- a/toolchain/check/testdata/packages/fail_package_main.carbon
+++ b/toolchain/check/testdata/packages/fail_package_main.carbon
@@ -45,14 +45,7 @@ package Main library "[[@TEST_NAME]]";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -68,14 +61,7 @@ package Main library "[[@TEST_NAME]]";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -91,14 +77,7 @@ package Main library "[[@TEST_NAME]]";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -114,14 +93,7 @@ package Main library "[[@TEST_NAME]]";
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/implicit_imports_prelude.carbon b/toolchain/check/testdata/packages/implicit_imports_prelude.carbon
index 2e7176f8648e..ed5eb769adb4 100644
--- a/toolchain/check/testdata/packages/implicit_imports_prelude.carbon
+++ b/toolchain/check/testdata/packages/implicit_imports_prelude.carbon
@@ -35,14 +35,7 @@ var b: i32 = a;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -82,14 +75,7 @@ var b: i32 = a;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/packages/loaded_global.carbon b/toolchain/check/testdata/packages/loaded_global.carbon
index d7810e72a3b4..e16a7b5bb838 100644
--- a/toolchain/check/testdata/packages/loaded_global.carbon
+++ b/toolchain/check/testdata/packages/loaded_global.carbon
@@ -49,14 +49,7 @@ var package_b: () = package.B();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -83,14 +76,7 @@ var package_b: () = package.B();
 // CHECK:STDOUT:   %import_ref: %A.type = import_ref Implicit//default, inst+3, loaded [template = constants.%A]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -139,14 +125,7 @@ var package_b: () = package.B();
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -173,14 +152,7 @@ var package_b: () = package.B();
 // CHECK:STDOUT:   %import_ref: %B.type = import_ref SamePackage//default, inst+3, loaded [template = constants.%B]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/packages/unused_lazy_import.carbon b/toolchain/check/testdata/packages/unused_lazy_import.carbon
index e88fcca20154..ddfac6cccd4f 100644
--- a/toolchain/check/testdata/packages/unused_lazy_import.carbon
+++ b/toolchain/check/testdata/packages/unused_lazy_import.carbon
@@ -29,14 +29,7 @@ impl package Implicit;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -57,14 +50,7 @@ impl package Implicit;
 // CHECK:STDOUT:   %import_ref = import_ref Implicit//default, inst+3, unloaded
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/pointer/address_of_deref.carbon b/toolchain/check/testdata/pointer/address_of_deref.carbon
index 76c53e714753..045ac334c948 100644
--- a/toolchain/check/testdata/pointer/address_of_deref.carbon
+++ b/toolchain/check/testdata/pointer/address_of_deref.carbon
@@ -29,14 +29,7 @@ fn F() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/address_of_lvalue.carbon b/toolchain/check/testdata/pointer/address_of_lvalue.carbon
index df012033c73a..4eeffe38b97a 100644
--- a/toolchain/check/testdata/pointer/address_of_lvalue.carbon
+++ b/toolchain/check/testdata/pointer/address_of_lvalue.carbon
@@ -45,14 +45,7 @@ fn F() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/arrow.carbon b/toolchain/check/testdata/pointer/arrow.carbon
index 06a3f81f5db1..d173a9b9ed9c 100644
--- a/toolchain/check/testdata/pointer/arrow.carbon
+++ b/toolchain/check/testdata/pointer/arrow.carbon
@@ -42,14 +42,7 @@ fn Foo(ptr: C*) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/pointer/basic.carbon b/toolchain/check/testdata/pointer/basic.carbon
index f505a87b523d..d24f08175f87 100644
--- a/toolchain/check/testdata/pointer/basic.carbon
+++ b/toolchain/check/testdata/pointer/basic.carbon
@@ -31,14 +31,7 @@ fn F() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/fail_address_of_error.carbon b/toolchain/check/testdata/pointer/fail_address_of_error.carbon
index d46defd2a0f1..cba82b0aa550 100644
--- a/toolchain/check/testdata/pointer/fail_address_of_error.carbon
+++ b/toolchain/check/testdata/pointer/fail_address_of_error.carbon
@@ -35,14 +35,7 @@ fn Test() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/pointer/fail_address_of_value.carbon b/toolchain/check/testdata/pointer/fail_address_of_value.carbon
index 9a262e65286c..65751db1f902 100644
--- a/toolchain/check/testdata/pointer/fail_address_of_value.carbon
+++ b/toolchain/check/testdata/pointer/fail_address_of_value.carbon
@@ -147,14 +147,7 @@ fn AddressOfParam(param: i32) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/fail_deref_error.carbon b/toolchain/check/testdata/pointer/fail_deref_error.carbon
index bf52476e77ee..32c350bc282c 100644
--- a/toolchain/check/testdata/pointer/fail_deref_error.carbon
+++ b/toolchain/check/testdata/pointer/fail_deref_error.carbon
@@ -30,14 +30,7 @@ let n2: i32 = undeclared->foo;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/fail_deref_function.carbon b/toolchain/check/testdata/pointer/fail_deref_function.carbon
index def0b04704c4..5217fe1ac03a 100644
--- a/toolchain/check/testdata/pointer/fail_deref_function.carbon
+++ b/toolchain/check/testdata/pointer/fail_deref_function.carbon
@@ -31,14 +31,7 @@ fn A() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/pointer/fail_deref_namespace.carbon b/toolchain/check/testdata/pointer/fail_deref_namespace.carbon
index 4c88727d0f71..25a92df4bf60 100644
--- a/toolchain/check/testdata/pointer/fail_deref_namespace.carbon
+++ b/toolchain/check/testdata/pointer/fail_deref_namespace.carbon
@@ -33,14 +33,7 @@ fn F() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/pointer/fail_deref_not_pointer.carbon b/toolchain/check/testdata/pointer/fail_deref_not_pointer.carbon
index 633537165fd7..6b39fb08610d 100644
--- a/toolchain/check/testdata/pointer/fail_deref_not_pointer.carbon
+++ b/toolchain/check/testdata/pointer/fail_deref_not_pointer.carbon
@@ -57,14 +57,7 @@ fn Deref(n: i32) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/fail_deref_type.carbon b/toolchain/check/testdata/pointer/fail_deref_type.carbon
index 8f0007229c0b..908b9cdd95e8 100644
--- a/toolchain/check/testdata/pointer/fail_deref_type.carbon
+++ b/toolchain/check/testdata/pointer/fail_deref_type.carbon
@@ -33,14 +33,7 @@ var p2: i32->foo;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/fail_type_mismatch.carbon b/toolchain/check/testdata/pointer/fail_type_mismatch.carbon
index 3f49544f8308..c4d14916c5d1 100644
--- a/toolchain/check/testdata/pointer/fail_type_mismatch.carbon
+++ b/toolchain/check/testdata/pointer/fail_type_mismatch.carbon
@@ -52,14 +52,7 @@ fn ConstMismatch(p: const {}*) -> const ({}*) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/pointer/import.carbon b/toolchain/check/testdata/pointer/import.carbon
index ff39e111e394..0e18dc2063e1 100644
--- a/toolchain/check/testdata/pointer/import.carbon
+++ b/toolchain/check/testdata/pointer/import.carbon
@@ -35,14 +35,7 @@ var a: i32* = a_ref;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -94,14 +87,7 @@ var a: i32* = a_ref;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.3
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.3: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/nested_const.carbon b/toolchain/check/testdata/pointer/nested_const.carbon
index bf36526d9b74..d8f93fcc7df1 100644
--- a/toolchain/check/testdata/pointer/nested_const.carbon
+++ b/toolchain/check/testdata/pointer/nested_const.carbon
@@ -32,14 +32,7 @@ fn F(p: const (const (const i32*)*)) -> const i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/pointer/types.carbon b/toolchain/check/testdata/pointer/types.carbon
index 7c455c88a026..326aa0aeffbb 100644
--- a/toolchain/check/testdata/pointer/types.carbon
+++ b/toolchain/check/testdata/pointer/types.carbon
@@ -35,14 +35,7 @@ fn ConstPtr(p: const i32*) -> (const i32)* {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/code_after_return.carbon b/toolchain/check/testdata/return/code_after_return.carbon
index c7d463a1e22d..2857846b1b8b 100644
--- a/toolchain/check/testdata/return/code_after_return.carbon
+++ b/toolchain/check/testdata/return/code_after_return.carbon
@@ -28,14 +28,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/code_after_return_value.carbon b/toolchain/check/testdata/return/code_after_return_value.carbon
index 565f308ba611..de2f8ce87b79 100644
--- a/toolchain/check/testdata/return/code_after_return_value.carbon
+++ b/toolchain/check/testdata/return/code_after_return_value.carbon
@@ -42,14 +42,7 @@ fn F(b: bool) -> i32 {
 // CHECK:STDOUT:     .Bool = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/return/fail_call_in_type.carbon b/toolchain/check/testdata/return/fail_call_in_type.carbon
index 309f4f0c3657..b6ebef4cef42 100644
--- a/toolchain/check/testdata/return/fail_call_in_type.carbon
+++ b/toolchain/check/testdata/return/fail_call_in_type.carbon
@@ -33,14 +33,7 @@ fn Six() -> ReturnType() { return 6; }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/fail_error_in_type.carbon b/toolchain/check/testdata/return/fail_error_in_type.carbon
index 2f4010a27a83..388cef4b5b2f 100644
--- a/toolchain/check/testdata/return/fail_error_in_type.carbon
+++ b/toolchain/check/testdata/return/fail_error_in_type.carbon
@@ -24,14 +24,7 @@ fn Six() -> x;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/return/fail_missing_return.carbon b/toolchain/check/testdata/return/fail_missing_return.carbon
index 0992333624a2..5db4b52da841 100644
--- a/toolchain/check/testdata/return/fail_missing_return.carbon
+++ b/toolchain/check/testdata/return/fail_missing_return.carbon
@@ -28,14 +28,7 @@ fn Main() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/fail_missing_return_empty_tuple.carbon b/toolchain/check/testdata/return/fail_missing_return_empty_tuple.carbon
index 0b9382374c11..6502563c7757 100644
--- a/toolchain/check/testdata/return/fail_missing_return_empty_tuple.carbon
+++ b/toolchain/check/testdata/return/fail_missing_return_empty_tuple.carbon
@@ -25,14 +25,7 @@ fn F() -> () {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/return/fail_return_var_no_returned_var.carbon b/toolchain/check/testdata/return/fail_return_var_no_returned_var.carbon
index 353497d8511e..ca7b4e2041ee 100644
--- a/toolchain/check/testdata/return/fail_return_var_no_returned_var.carbon
+++ b/toolchain/check/testdata/return/fail_return_var_no_returned_var.carbon
@@ -29,14 +29,7 @@ fn Procedure() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/fail_return_with_returned_var.carbon b/toolchain/check/testdata/return/fail_return_with_returned_var.carbon
index 4e8a3cd0b90d..f0c214e88608 100644
--- a/toolchain/check/testdata/return/fail_return_with_returned_var.carbon
+++ b/toolchain/check/testdata/return/fail_return_with_returned_var.carbon
@@ -57,14 +57,7 @@ fn G() -> C {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/fail_returned_var_no_return_type.carbon b/toolchain/check/testdata/return/fail_returned_var_no_return_type.carbon
index ecfc8b5bdc9a..a15a39444842 100644
--- a/toolchain/check/testdata/return/fail_returned_var_no_return_type.carbon
+++ b/toolchain/check/testdata/return/fail_returned_var_no_return_type.carbon
@@ -30,14 +30,7 @@ fn Procedure() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/return/fail_returned_var_shadow.carbon b/toolchain/check/testdata/return/fail_returned_var_shadow.carbon
index 6255b516338e..c51907ed3fad 100644
--- a/toolchain/check/testdata/return/fail_returned_var_shadow.carbon
+++ b/toolchain/check/testdata/return/fail_returned_var_shadow.carbon
@@ -58,14 +58,7 @@ fn DifferentScopes() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/fail_returned_var_type.carbon b/toolchain/check/testdata/return/fail_returned_var_type.carbon
index 3ba01f92db30..6c543f0be4a9 100644
--- a/toolchain/check/testdata/return/fail_returned_var_type.carbon
+++ b/toolchain/check/testdata/return/fail_returned_var_type.carbon
@@ -38,14 +38,7 @@ fn Mismatch() -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/return/fail_type_mismatch.carbon b/toolchain/check/testdata/return/fail_type_mismatch.carbon
index 5297d9187be4..5588090d795e 100644
--- a/toolchain/check/testdata/return/fail_type_mismatch.carbon
+++ b/toolchain/check/testdata/return/fail_type_mismatch.carbon
@@ -51,14 +51,7 @@ fn Main() -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/return/fail_value_disallowed.carbon b/toolchain/check/testdata/return/fail_value_disallowed.carbon
index d82a5bd6d794..756870fed7b9 100644
--- a/toolchain/check/testdata/return/fail_value_disallowed.carbon
+++ b/toolchain/check/testdata/return/fail_value_disallowed.carbon
@@ -30,14 +30,7 @@ fn Main() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/return/fail_value_missing.carbon b/toolchain/check/testdata/return/fail_value_missing.carbon
index 7cbcc16de2c3..91fb5cd16ee5 100644
--- a/toolchain/check/testdata/return/fail_value_missing.carbon
+++ b/toolchain/check/testdata/return/fail_value_missing.carbon
@@ -32,14 +32,7 @@ fn Main() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/fail_var_in_type.carbon b/toolchain/check/testdata/return/fail_var_in_type.carbon
index 30501660c863..5fe53e74f753 100644
--- a/toolchain/check/testdata/return/fail_var_in_type.carbon
+++ b/toolchain/check/testdata/return/fail_var_in_type.carbon
@@ -29,14 +29,7 @@ fn Six() -> x { return 6; }
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/missing_return_no_return_type.carbon b/toolchain/check/testdata/return/missing_return_no_return_type.carbon
index cb2ac0d60dc8..9483fe8ac746 100644
--- a/toolchain/check/testdata/return/missing_return_no_return_type.carbon
+++ b/toolchain/check/testdata/return/missing_return_no_return_type.carbon
@@ -22,14 +22,7 @@ fn F() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/return/no_value.carbon b/toolchain/check/testdata/return/no_value.carbon
index 9c21fa0fd203..c0989dec6682 100644
--- a/toolchain/check/testdata/return/no_value.carbon
+++ b/toolchain/check/testdata/return/no_value.carbon
@@ -23,14 +23,7 @@ fn Main() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/return/returned_var.carbon b/toolchain/check/testdata/return/returned_var.carbon
index ddef9f7cb3f0..79528eaad4a9 100644
--- a/toolchain/check/testdata/return/returned_var.carbon
+++ b/toolchain/check/testdata/return/returned_var.carbon
@@ -48,14 +48,7 @@ fn G() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/returned_var_scope.carbon b/toolchain/check/testdata/return/returned_var_scope.carbon
index 961edb1fe702..197fe2d4aae2 100644
--- a/toolchain/check/testdata/return/returned_var_scope.carbon
+++ b/toolchain/check/testdata/return/returned_var_scope.carbon
@@ -49,14 +49,7 @@ fn EnclosingButAfter(b: bool) -> i32 {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
diff --git a/toolchain/check/testdata/return/struct.carbon b/toolchain/check/testdata/return/struct.carbon
index e2cac278caef..73861dd6a5d7 100644
--- a/toolchain/check/testdata/return/struct.carbon
+++ b/toolchain/check/testdata/return/struct.carbon
@@ -29,14 +29,7 @@ fn Main() -> {.a: i32} {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/tuple.carbon b/toolchain/check/testdata/return/tuple.carbon
index 850cb55d4729..05b736626907 100644
--- a/toolchain/check/testdata/return/tuple.carbon
+++ b/toolchain/check/testdata/return/tuple.carbon
@@ -33,14 +33,7 @@ fn Main() -> (i32, i32) {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/return/value.carbon b/toolchain/check/testdata/return/value.carbon
index 4325bfb2bd0b..ae0266f14e8f 100644
--- a/toolchain/check/testdata/return/value.carbon
+++ b/toolchain/check/testdata/return/value.carbon
@@ -27,14 +27,7 @@ fn Main() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/fail_access_into_invalid.carbon b/toolchain/check/testdata/struct/fail_access_into_invalid.carbon
index 9184c930b24b..f05c732afe71 100644
--- a/toolchain/check/testdata/struct/fail_access_into_invalid.carbon
+++ b/toolchain/check/testdata/struct/fail_access_into_invalid.carbon
@@ -25,14 +25,7 @@ fn F() { a.b; }
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/struct/fail_assign_empty.carbon b/toolchain/check/testdata/struct/fail_assign_empty.carbon
index a8790f418998..7406e91eeef1 100644
--- a/toolchain/check/testdata/struct/fail_assign_empty.carbon
+++ b/toolchain/check/testdata/struct/fail_assign_empty.carbon
@@ -27,14 +27,7 @@ var x: {.a: i32} = {};
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/fail_assign_to_empty.carbon b/toolchain/check/testdata/struct/fail_assign_to_empty.carbon
index 42394041e5ac..7c51a999e446 100644
--- a/toolchain/check/testdata/struct/fail_assign_to_empty.carbon
+++ b/toolchain/check/testdata/struct/fail_assign_to_empty.carbon
@@ -25,14 +25,7 @@ var x: {} = {.a = 1};
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/struct/fail_duplicate_name.carbon b/toolchain/check/testdata/struct/fail_duplicate_name.carbon
index 0f7b3126b0cb..d12321a27ae2 100644
--- a/toolchain/check/testdata/struct/fail_duplicate_name.carbon
+++ b/toolchain/check/testdata/struct/fail_duplicate_name.carbon
@@ -73,14 +73,7 @@ var y: {.b: i32, .c: i32} = {.b = 3, .b = 4};
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/fail_field_name_mismatch.carbon b/toolchain/check/testdata/struct/fail_field_name_mismatch.carbon
index 4b59f9604f78..2bd3c34dc7a3 100644
--- a/toolchain/check/testdata/struct/fail_field_name_mismatch.carbon
+++ b/toolchain/check/testdata/struct/fail_field_name_mismatch.carbon
@@ -34,14 +34,7 @@ var y: {.b: i32} = x;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/fail_field_type_mismatch.carbon b/toolchain/check/testdata/struct/fail_field_type_mismatch.carbon
index 665995ff524b..8f2f1b0a592a 100644
--- a/toolchain/check/testdata/struct/fail_field_type_mismatch.carbon
+++ b/toolchain/check/testdata/struct/fail_field_type_mismatch.carbon
@@ -28,14 +28,7 @@ var x: {.a: i32} = {.b = 1.0};
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/fail_member_access_type.carbon b/toolchain/check/testdata/struct/fail_member_access_type.carbon
index 0e6703ce0af9..54387c8e42dd 100644
--- a/toolchain/check/testdata/struct/fail_member_access_type.carbon
+++ b/toolchain/check/testdata/struct/fail_member_access_type.carbon
@@ -33,14 +33,7 @@ var y: i32 = x.b;
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/struct/fail_member_of_function.carbon b/toolchain/check/testdata/struct/fail_member_of_function.carbon
index cf5132401e1f..b624cdda8d3c 100644
--- a/toolchain/check/testdata/struct/fail_member_of_function.carbon
+++ b/toolchain/check/testdata/struct/fail_member_of_function.carbon
@@ -26,14 +26,7 @@ fn A() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/struct/fail_non_member_access.carbon b/toolchain/check/testdata/struct/fail_non_member_access.carbon
index e3710b06f894..da0d095e413e 100644
--- a/toolchain/check/testdata/struct/fail_non_member_access.carbon
+++ b/toolchain/check/testdata/struct/fail_non_member_access.carbon
@@ -29,14 +29,7 @@ var y: i32 = x.b;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/fail_too_few_values.carbon b/toolchain/check/testdata/struct/fail_too_few_values.carbon
index 1d1ab50e3514..1dfe6f542b3e 100644
--- a/toolchain/check/testdata/struct/fail_too_few_values.carbon
+++ b/toolchain/check/testdata/struct/fail_too_few_values.carbon
@@ -29,14 +29,7 @@ var x: {.a: i32, .b: i32} = {.a = 1};
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/fail_type_assign.carbon b/toolchain/check/testdata/struct/fail_type_assign.carbon
index 6b7cd2e58144..555bda7cdfec 100644
--- a/toolchain/check/testdata/struct/fail_type_assign.carbon
+++ b/toolchain/check/testdata/struct/fail_type_assign.carbon
@@ -47,14 +47,7 @@ var x: {.a: i32} = {.a: i32};
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/struct/fail_value_as_type.carbon b/toolchain/check/testdata/struct/fail_value_as_type.carbon
index 66566d722362..69e7dc805076 100644
--- a/toolchain/check/testdata/struct/fail_value_as_type.carbon
+++ b/toolchain/check/testdata/struct/fail_value_as_type.carbon
@@ -46,14 +46,7 @@ var x: {.a = 1};
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/struct/import.carbon b/toolchain/check/testdata/struct/import.carbon
index e22136944640..9cb4ab5bddc8 100644
--- a/toolchain/check/testdata/struct/import.carbon
+++ b/toolchain/check/testdata/struct/import.carbon
@@ -91,14 +91,7 @@ var c_bad: C({.a = 3, .b = 4}) = F();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -261,14 +254,7 @@ var c_bad: C({.a = 3, .b = 4}) = F();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.6 = import_ref Implicit//default, inst+109, unloaded
@@ -416,14 +402,7 @@ var c_bad: C({.a = 3, .b = 4}) = F();
 // CHECK:STDOUT:   %import_ref.4: %F.type = import_ref Implicit//default, inst+131, loaded [template = constants.%F]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5 = import_ref Implicit//default, inst+109, unloaded
 // CHECK:STDOUT: }
@@ -534,14 +513,7 @@ var c_bad: C({.a = 3, .b = 4}) = F();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.6
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5 = import_ref Implicit//default, inst+109, unloaded
 // CHECK:STDOUT:   %import_ref.6: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/struct/literal_member_access.carbon b/toolchain/check/testdata/struct/literal_member_access.carbon
index 179e70616224..7b40207d1d52 100644
--- a/toolchain/check/testdata/struct/literal_member_access.carbon
+++ b/toolchain/check/testdata/struct/literal_member_access.carbon
@@ -37,14 +37,7 @@ fn F() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/member_access.carbon b/toolchain/check/testdata/struct/member_access.carbon
index 21accb6263c4..113c929fad21 100644
--- a/toolchain/check/testdata/struct/member_access.carbon
+++ b/toolchain/check/testdata/struct/member_access.carbon
@@ -33,14 +33,7 @@ var z: i32 = y;
 // CHECK:STDOUT:     .Float = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
 // CHECK:STDOUT:   %import_ref.2: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
diff --git a/toolchain/check/testdata/struct/nested_struct_in_place.carbon b/toolchain/check/testdata/struct/nested_struct_in_place.carbon
index 8579ef9b032d..a5c3a92dad08 100644
--- a/toolchain/check/testdata/struct/nested_struct_in_place.carbon
+++ b/toolchain/check/testdata/struct/nested_struct_in_place.carbon
@@ -36,14 +36,7 @@ fn G() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/one_entry.carbon b/toolchain/check/testdata/struct/one_entry.carbon
index e1d282d62c49..8ba7654b0414 100644
--- a/toolchain/check/testdata/struct/one_entry.carbon
+++ b/toolchain/check/testdata/struct/one_entry.carbon
@@ -26,14 +26,7 @@ var y: {.a: i32} = x;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/reorder_fields.carbon b/toolchain/check/testdata/struct/reorder_fields.carbon
index 28c303ae97f0..4db17d0edcd1 100644
--- a/toolchain/check/testdata/struct/reorder_fields.carbon
+++ b/toolchain/check/testdata/struct/reorder_fields.carbon
@@ -43,14 +43,7 @@ fn F() -> {.a: i32, .b: f64} {
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Float = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Float.type = import_ref Core//prelude/types, inst+60, loaded [template = constants.%Float]
diff --git a/toolchain/check/testdata/struct/tuple_as_element.carbon b/toolchain/check/testdata/struct/tuple_as_element.carbon
index 9efeaae31f17..b0864e650eca 100644
--- a/toolchain/check/testdata/struct/tuple_as_element.carbon
+++ b/toolchain/check/testdata/struct/tuple_as_element.carbon
@@ -31,14 +31,7 @@ var y: {.a: i32, .b: (i32,)} = x;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/struct/two_entries.carbon b/toolchain/check/testdata/struct/two_entries.carbon
index 04148a028167..22f24c734eed 100644
--- a/toolchain/check/testdata/struct/two_entries.carbon
+++ b/toolchain/check/testdata/struct/two_entries.carbon
@@ -31,14 +31,7 @@ var y: {.a: i32, .b: i32} = x;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/element_access.carbon b/toolchain/check/testdata/tuple/access/element_access.carbon
index de2be4a60a9c..c05570b5179c 100644
--- a/toolchain/check/testdata/tuple/access/element_access.carbon
+++ b/toolchain/check/testdata/tuple/access/element_access.carbon
@@ -29,14 +29,7 @@ var c: i32 = b.0;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/fail_access_error.carbon b/toolchain/check/testdata/tuple/access/fail_access_error.carbon
index f033f77bf851..eef63e54de81 100644
--- a/toolchain/check/testdata/tuple/access/fail_access_error.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_access_error.carbon
@@ -32,14 +32,7 @@ var b: i32 = a.(oops);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/fail_empty_access.carbon b/toolchain/check/testdata/tuple/access/fail_empty_access.carbon
index db6802fca9bc..0b21527c5933 100644
--- a/toolchain/check/testdata/tuple/access/fail_empty_access.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_empty_access.carbon
@@ -31,14 +31,7 @@ fn Run() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/tuple/access/fail_large_index.carbon b/toolchain/check/testdata/tuple/access/fail_large_index.carbon
index f2f066e308a4..2a15628b7779 100644
--- a/toolchain/check/testdata/tuple/access/fail_large_index.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_large_index.carbon
@@ -38,14 +38,7 @@ var d: i32 = b.(0x7FFF_FFFF);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/fail_negative_indexing.carbon b/toolchain/check/testdata/tuple/access/fail_negative_indexing.carbon
index 8d3f86b9fbe0..5e57706dedd3 100644
--- a/toolchain/check/testdata/tuple/access/fail_negative_indexing.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_negative_indexing.carbon
@@ -40,14 +40,7 @@ var b: i32 = a.(-10);
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Negate = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: type = import_ref Core//prelude/operators/arithmetic, inst+85, loaded [template = constants.%Negate.type]
diff --git a/toolchain/check/testdata/tuple/access/fail_non_deterministic_type.carbon b/toolchain/check/testdata/tuple/access/fail_non_deterministic_type.carbon
index bc419b24b85d..ac3a244f3ab5 100644
--- a/toolchain/check/testdata/tuple/access/fail_non_deterministic_type.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_non_deterministic_type.carbon
@@ -34,14 +34,7 @@ var c: i32 = a.(b);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/fail_non_int_indexing.carbon b/toolchain/check/testdata/tuple/access/fail_non_int_indexing.carbon
index 5f85c91df10f..7c6154c59439 100644
--- a/toolchain/check/testdata/tuple/access/fail_non_int_indexing.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_non_int_indexing.carbon
@@ -54,14 +54,7 @@ var b: i32 = a.(2.6);
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/tuple/access/fail_non_tuple_access.carbon b/toolchain/check/testdata/tuple/access/fail_non_tuple_access.carbon
index 7a82e9d2c456..87547d2fd61e 100644
--- a/toolchain/check/testdata/tuple/access/fail_non_tuple_access.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_non_tuple_access.carbon
@@ -58,14 +58,7 @@ fn Main() {
 // CHECK:STDOUT:     .IndexWith = %import_ref.1
 // CHECK:STDOUT:     .Int32 = %import_ref.6
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %IndexWith.type.1 = import_ref Core//prelude/operators/index, inst+13, loaded [template = constants.%IndexWith]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/index, inst+22, unloaded
diff --git a/toolchain/check/testdata/tuple/access/fail_out_of_bound_access.carbon b/toolchain/check/testdata/tuple/access/fail_out_of_bound_access.carbon
index b9c3a2659196..5ed613868aea 100644
--- a/toolchain/check/testdata/tuple/access/fail_out_of_bound_access.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_out_of_bound_access.carbon
@@ -33,14 +33,7 @@ var b: i32 = a.2;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/fail_out_of_bound_not_literal.carbon b/toolchain/check/testdata/tuple/access/fail_out_of_bound_not_literal.carbon
index f9ad35262cfe..a7d783a9ed63 100644
--- a/toolchain/check/testdata/tuple/access/fail_out_of_bound_not_literal.carbon
+++ b/toolchain/check/testdata/tuple/access/fail_out_of_bound_not_literal.carbon
@@ -35,14 +35,7 @@ var b: i32 = a.({.index = 2}.index);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/index_not_literal.carbon b/toolchain/check/testdata/tuple/access/index_not_literal.carbon
index e315ed4de5f4..9fac99ab921f 100644
--- a/toolchain/check/testdata/tuple/access/index_not_literal.carbon
+++ b/toolchain/check/testdata/tuple/access/index_not_literal.carbon
@@ -32,14 +32,7 @@ var b: i32 = a.({.index = 1}.index);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/access/return_value_access.carbon b/toolchain/check/testdata/tuple/access/return_value_access.carbon
index 6898804ed34a..f74d58aca076 100644
--- a/toolchain/check/testdata/tuple/access/return_value_access.carbon
+++ b/toolchain/check/testdata/tuple/access/return_value_access.carbon
@@ -34,14 +34,7 @@ fn Run() -> i32 {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/fail_assign_nested.carbon b/toolchain/check/testdata/tuple/fail_assign_nested.carbon
index 729151e04f6c..0424de4ca7c0 100644
--- a/toolchain/check/testdata/tuple/fail_assign_nested.carbon
+++ b/toolchain/check/testdata/tuple/fail_assign_nested.carbon
@@ -40,14 +40,7 @@ var x: ((i32, i32), (i32, i32)) = ((1, 2, 3), (4, 5, 6));
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/fail_element_type_mismatch.carbon b/toolchain/check/testdata/tuple/fail_element_type_mismatch.carbon
index a69fd3cfa654..9222862617e4 100644
--- a/toolchain/check/testdata/tuple/fail_element_type_mismatch.carbon
+++ b/toolchain/check/testdata/tuple/fail_element_type_mismatch.carbon
@@ -52,14 +52,7 @@ var x: (i32, i32) = (2, 65.89);
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/tuple/fail_nested_incomplete.carbon b/toolchain/check/testdata/tuple/fail_nested_incomplete.carbon
index 148f354bd5fe..65f8c6641c3d 100644
--- a/toolchain/check/testdata/tuple/fail_nested_incomplete.carbon
+++ b/toolchain/check/testdata/tuple/fail_nested_incomplete.carbon
@@ -37,14 +37,7 @@ var p: Incomplete* = &t[1];
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/fail_too_few_element.carbon b/toolchain/check/testdata/tuple/fail_too_few_element.carbon
index 4364cb086d18..4cb9e9fdfa67 100644
--- a/toolchain/check/testdata/tuple/fail_too_few_element.carbon
+++ b/toolchain/check/testdata/tuple/fail_too_few_element.carbon
@@ -30,14 +30,7 @@ var x: (i32, i32) = (2, );
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/fail_type_assign.carbon b/toolchain/check/testdata/tuple/fail_type_assign.carbon
index d7c34b7fe781..8081dbecb3bf 100644
--- a/toolchain/check/testdata/tuple/fail_type_assign.carbon
+++ b/toolchain/check/testdata/tuple/fail_type_assign.carbon
@@ -48,14 +48,7 @@ var x: (i32, ) = (i32, );
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/tuple/fail_value_as_type.carbon b/toolchain/check/testdata/tuple/fail_value_as_type.carbon
index 97d5e8d1091a..c398059f60a4 100644
--- a/toolchain/check/testdata/tuple/fail_value_as_type.carbon
+++ b/toolchain/check/testdata/tuple/fail_value_as_type.carbon
@@ -45,14 +45,7 @@ var x: (1, );
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/tuple/import.carbon b/toolchain/check/testdata/tuple/import.carbon
index 940fad594d58..1e24332fbbe2 100644
--- a/toolchain/check/testdata/tuple/import.carbon
+++ b/toolchain/check/testdata/tuple/import.carbon
@@ -96,14 +96,7 @@ var c_bad: C((3, 4)) = F();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -284,14 +277,7 @@ var c_bad: C((3, 4)) = F();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref.5
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.6 = import_ref Implicit//default, inst+113, unloaded
@@ -456,14 +442,7 @@ var c_bad: C((3, 4)) = F();
 // CHECK:STDOUT:   %import_ref.4: %F.type = import_ref Implicit//default, inst+130, loaded [template = constants.%F]
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5 = import_ref Implicit//default, inst+113, unloaded
 // CHECK:STDOUT: }
@@ -575,14 +554,7 @@ var c_bad: C((3, 4)) = F();
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.6
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.5 = import_ref Implicit//default, inst+113, unloaded
 // CHECK:STDOUT:   %import_ref.6: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
diff --git a/toolchain/check/testdata/tuple/nested_tuple.carbon b/toolchain/check/testdata/tuple/nested_tuple.carbon
index bb9bffabe034..e56f6b546add 100644
--- a/toolchain/check/testdata/tuple/nested_tuple.carbon
+++ b/toolchain/check/testdata/tuple/nested_tuple.carbon
@@ -34,14 +34,7 @@ var x: ((i32, i32), i32) = ((12, 76), 6);
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/nested_tuple_in_place.carbon b/toolchain/check/testdata/tuple/nested_tuple_in_place.carbon
index 3f277cca8075..345bfda5c103 100644
--- a/toolchain/check/testdata/tuple/nested_tuple_in_place.carbon
+++ b/toolchain/check/testdata/tuple/nested_tuple_in_place.carbon
@@ -49,14 +49,7 @@ fn H() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/one_element.carbon b/toolchain/check/testdata/tuple/one_element.carbon
index 2bdea47b79c9..42af27c2564c 100644
--- a/toolchain/check/testdata/tuple/one_element.carbon
+++ b/toolchain/check/testdata/tuple/one_element.carbon
@@ -27,14 +27,7 @@ var y: (i32,) = x;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/tuple/two_elements.carbon b/toolchain/check/testdata/tuple/two_elements.carbon
index 36a7cacd0669..0bd3b28997a6 100644
--- a/toolchain/check/testdata/tuple/two_elements.carbon
+++ b/toolchain/check/testdata/tuple/two_elements.carbon
@@ -32,14 +32,7 @@ var y: (i32, i32) = x;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/var/fail_not_copyable.carbon b/toolchain/check/testdata/var/fail_not_copyable.carbon
index 178a24a04a79..525470f6a136 100644
--- a/toolchain/check/testdata/var/fail_not_copyable.carbon
+++ b/toolchain/check/testdata/var/fail_not_copyable.carbon
@@ -44,14 +44,7 @@ fn F(x: X) {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/var/fail_storage_is_literal.carbon b/toolchain/check/testdata/var/fail_storage_is_literal.carbon
index 5e7c44477c91..8854f7438fc3 100644
--- a/toolchain/check/testdata/var/fail_storage_is_literal.carbon
+++ b/toolchain/check/testdata/var/fail_storage_is_literal.carbon
@@ -48,14 +48,7 @@ fn Main() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/var/fail_todo_control_flow_init.carbon b/toolchain/check/testdata/var/fail_todo_control_flow_init.carbon
index 51e41be377ca..edf248bd0597 100644
--- a/toolchain/check/testdata/var/fail_todo_control_flow_init.carbon
+++ b/toolchain/check/testdata/var/fail_todo_control_flow_init.carbon
@@ -70,14 +70,7 @@ var y2: bool = false or true;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/where_expr/constraints.carbon b/toolchain/check/testdata/where_expr/constraints.carbon
index 3f73c06e227f..37078824ab19 100644
--- a/toolchain/check/testdata/where_expr/constraints.carbon
+++ b/toolchain/check/testdata/where_expr/constraints.carbon
@@ -199,14 +199,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -371,14 +364,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -544,14 +530,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -738,14 +717,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.12
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.6 = import_ref Main//state_constraints, inst+9, unloaded
 // CHECK:STDOUT:   %import_ref.7: %.2 = import_ref Main//state_constraints, inst+13, loaded [template = constants.%.3]
@@ -909,14 +881,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -1057,14 +1022,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
@@ -1190,14 +1148,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
@@ -1290,14 +1241,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.7
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.6 = import_ref Main//state_constraints, inst+5, unloaded
 // CHECK:STDOUT:   %import_ref.7: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
@@ -1490,14 +1434,7 @@ let B: type where .Self impls A = D;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/where_expr/designator.carbon b/toolchain/check/testdata/where_expr/designator.carbon
index 5e72667f9310..7f0e78110749 100644
--- a/toolchain/check/testdata/where_expr/designator.carbon
+++ b/toolchain/check/testdata/where_expr/designator.carbon
@@ -113,14 +113,7 @@ class D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -244,14 +237,7 @@ class D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -314,14 +300,7 @@ class D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -363,14 +342,7 @@ class D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -412,14 +384,7 @@ class D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
@@ -468,14 +433,7 @@ class D {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/where_expr/fail_not_facet.carbon b/toolchain/check/testdata/where_expr/fail_not_facet.carbon
index 57c1d9671920..10314404eb53 100644
--- a/toolchain/check/testdata/where_expr/fail_not_facet.carbon
+++ b/toolchain/check/testdata/where_expr/fail_not_facet.carbon
@@ -65,14 +65,7 @@ var v: e where .x = 3;
 // CHECK:STDOUT:     .Int32 = %import_ref.1
 // CHECK:STDOUT:     .Bool = %import_ref.2
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT:   %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
@@ -135,14 +128,7 @@ var v: e where .x = 3;
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
@@ -193,14 +179,7 @@ var v: e where .x = 3;
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/where_expr/non_generic.carbon b/toolchain/check/testdata/where_expr/non_generic.carbon
index 3de2111806d5..4a14d45e2bab 100644
--- a/toolchain/check/testdata/where_expr/non_generic.carbon
+++ b/toolchain/check/testdata/where_expr/non_generic.carbon
@@ -32,14 +32,7 @@ fn NotGenericF(U: I where .T == i32) {}
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Int32 = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/while/break_continue.carbon b/toolchain/check/testdata/while/break_continue.carbon
index 08ef887cc9f6..3190822482ac 100644
--- a/toolchain/check/testdata/while/break_continue.carbon
+++ b/toolchain/check/testdata/while/break_continue.carbon
@@ -60,14 +60,7 @@ fn While() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/while/fail_bad_condition.carbon b/toolchain/check/testdata/while/fail_bad_condition.carbon
index 3c9512218194..ae989f0ec34f 100644
--- a/toolchain/check/testdata/while/fail_bad_condition.carbon
+++ b/toolchain/check/testdata/while/fail_bad_condition.carbon
@@ -49,14 +49,7 @@ fn While() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .ImplicitAs = %import_ref.1
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref.1: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+49, loaded [template = constants.%ImplicitAs]
 // CHECK:STDOUT:   %import_ref.2 = import_ref Core//prelude/operators/as, inst+55, unloaded
diff --git a/toolchain/check/testdata/while/fail_break_continue.carbon b/toolchain/check/testdata/while/fail_break_continue.carbon
index d6d3e5f16d50..e640fc02e5c6 100644
--- a/toolchain/check/testdata/while/fail_break_continue.carbon
+++ b/toolchain/check/testdata/while/fail_break_continue.carbon
@@ -46,14 +46,7 @@ fn While() {
 // CHECK:STDOUT: imports {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT: }
 // CHECK:STDOUT:
diff --git a/toolchain/check/testdata/while/unreachable_end.carbon b/toolchain/check/testdata/while/unreachable_end.carbon
index c85101df623b..68e1e2a7ddf9 100644
--- a/toolchain/check/testdata/while/unreachable_end.carbon
+++ b/toolchain/check/testdata/while/unreachable_end.carbon
@@ -45,14 +45,7 @@ fn While() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/check/testdata/while/while.carbon b/toolchain/check/testdata/while/while.carbon
index 5a57d423e664..aa9aef7c2759 100644
--- a/toolchain/check/testdata/while/while.carbon
+++ b/toolchain/check/testdata/while/while.carbon
@@ -44,14 +44,7 @@ fn While() {
 // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
 // CHECK:STDOUT:     .Bool = %import_ref
 // CHECK:STDOUT:     import Core//prelude
-// CHECK:STDOUT:     import Core//prelude/operators
-// CHECK:STDOUT:     import Core//prelude/types
-// CHECK:STDOUT:     import Core//prelude/operators/arithmetic
-// CHECK:STDOUT:     import Core//prelude/operators/as
-// CHECK:STDOUT:     import Core//prelude/operators/index
-// CHECK:STDOUT:     import Core//prelude/operators/bitwise
-// CHECK:STDOUT:     import Core//prelude/operators/comparison
-// CHECK:STDOUT:     import Core//prelude/types/bool
+// CHECK:STDOUT:     import Core//prelude/...
 // CHECK:STDOUT:   }
 // CHECK:STDOUT:   %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
 // CHECK:STDOUT: }
diff --git a/toolchain/sem_ir/formatter.cpp b/toolchain/sem_ir/formatter.cpp
index ab869b5f251a..30ece9130137 100644
--- a/toolchain/sem_ir/formatter.cpp
+++ b/toolchain/sem_ir/formatter.cpp
@@ -542,11 +542,24 @@ class FormatterImpl {
       out_ << "extend " << extended_scope_id << "\n";
     }
 
+    // This is used to cluster all "Core//prelude/..." imports, but not
+    // "Core//prelude" itself. This avoids unrelated churn in test files when we
+    // add or remove an unused prelude file, but is intended to still show the
+    // existence of indirect imports.
+    bool has_prelude_components = false;
     for (auto [import_ir_id, unused] : scope.import_ir_scopes) {
+      auto label = GetImportIRLabel(import_ir_id);
+      if (label.starts_with("Core//prelude/")) {
+        if (has_prelude_components) {
+          // Only print the existence once.
+          continue;
+        } else {
+          has_prelude_components = true;
+          label = "Core//prelude/...";
+        }
+      }
       Indent();
-      out_ << "import ";
-      FormatArg(import_ir_id);
-      out_ << "\n";
+      out_ << "import " << label << "\n";
     }
 
     if (scope.has_error) {
@@ -948,23 +961,10 @@ class FormatterImpl {
   auto FormatArg(FloatKind k) -> void { k.Print(out_); }
 
   auto FormatArg(ImportIRId id) -> void {
-    if (!id.is_valid()) {
+    if (id.is_valid()) {
+      out_ << GetImportIRLabel(id);
+    } else {
       out_ << id;
-      return;
-    }
-    const auto& import_ir = *sem_ir_.import_irs().Get(id).sem_ir;
-    if (import_ir.package_id().is_valid()) {
-      out_ << import_ir.identifiers().Get(import_ir.package_id());
-    } else {
-      out_ << "Main";
-    }
-    out_ << "//";
-    CARBON_CHECK(import_ir.library_id().is_valid());
-    if (import_ir.library_id() == LibraryNameId::Default) {
-      out_ << "default";
-    } else {
-      out_ << import_ir.string_literal_values().Get(
-          import_ir.library_id().AsStringLiteralValueId());
     }
   }
 
@@ -1118,6 +1118,25 @@ class FormatterImpl {
     }
   }
 
+  // Returns the label for the indicated IR.
+  auto GetImportIRLabel(ImportIRId id) -> std::string {
+    CARBON_CHECK(id.is_valid(),
+                 "GetImportIRLabel should only be called where we a valid ID.");
+    const auto& import_ir = *sem_ir_.import_irs().Get(id).sem_ir;
+    CARBON_CHECK(import_ir.library_id().is_valid());
+
+    llvm::StringRef package_name =
+        import_ir.package_id().is_valid()
+            ? import_ir.identifiers().Get(import_ir.package_id())
+            : "Main";
+    llvm::StringRef library_name =
+        (import_ir.library_id() != LibraryNameId::Default)
+            ? import_ir.string_literal_values().Get(
+                  import_ir.library_id().AsStringLiteralValueId())
+            : "default";
+    return llvm::formatv("{0}//{1}", package_name, library_name);
+  }
+
   const File& sem_ir_;
   InstNamer* const inst_namer_;