[libcxx-commits] [libcxx] Attempt entire rewrite of buildkite pipeline using anchors. (PR #71624)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne requested changes to this pull request.

This is a great improvement -- I love that we're removing a bunch of duplication.

https://github.com/llvm/llvm-project/pull/71624