[libcxx-commits] [libcxx] [libc++] Rewrite the transitive header checking machinery (PR #110554)

[Louis Dionne via libcxx-commits]

ldionne wrote:

I'll merge this to unblock a chain of dependencies getting longer and longer. I'm willing to take any post-review feedback and I can create a follow-up PR, but for now this fixes some concrete issues preventing us (amongst other things) to move to Docker-in-Docker and update the Docker images, which is blocking the clang-tidy tests re-enablement.

https://github.com/llvm/llvm-project/pull/110554