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Dana Jansens 9d5575c920 Revert to Ubuntu 22 builders (#5479 )

The Ubuntu 24 builders have a newer GLIBC than is present on the
compiler-explorer machines:
https://github.com/compiler-explorer/compiler-explorer/issues/7636#issuecomment-2880962252.
This results in the following error when running Carbon nightly:
```
/opt/compiler-explorer/carbon-trunk/bin/carbon: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found (required by /opt/compiler-explorer/carbon-trunk/bin/carbon)
```

To resolve this, we need to build Carbon in a sysroot with a compatible
glibc version, and the most straightforward way to do that is to bump
our builders back down to Ubuntu 22.

To do that, we can't use apt.llvm.org again, since Ubuntu 22 is no
longer supported there. So we revert back to pulling a Linux X64 tarball
from the LLVM GitHub Releases page. Instead of getting an
ubuntu-specific tarball (which does not exist), we grab the generic
Linux one, which seems to work fine.

Note that the binaries in the LLVM release package appear to depend on
glibc version 2.34, as determined by `objdump -T bin/clang|grep GLIBC_|
sed 's/.*GLIBC_\([.0-9]*\).*/\1/g' | sort -Vu`, so these binaries should
hopefully be okay to package with the Carbon toolchain for the
compiler-explorer machines as well.

2025-05-14 20:41:07 +00:00

auto_assign_prs.yaml

Remove references to explorer (#5287 )

2025-04-10 22:05:45 +00:00

auto_label_prs.yaml

Remove references to explorer (#5287 )

2025-04-10 22:05:45 +00:00

clang_tidy.yaml

Revert to Ubuntu 22 builders (#5479 )

2025-05-14 20:41:07 +00:00

discord_wiki.yaml

Fix stray quote in action (#4193 )