Previously, changes to externals were also tracked, resulting in
absolutely hilarious abominations like https://github.com/FEX-Emu/FEX/actions/runs/20498228017/job/58901276463?pr=5162
So rather than dealing with that weird action, just fetch the main
branch and run a `diff --name-only` with the PR's merge base with main.
This is how I've done several dozen diff-based scripts (license headers,
clang-format, etc) and it works perfectly, so let's just use this.
Should run quicker too but don't put any money on it.
I also went ahead and removed a bunch of unnecessary quotations cuz
wynaut.
Signed-off-by: crueter <crueter@eden-emu.dev>
This repo is provided by them with the commit prior to when it was
compromised. LLVM has switched to the same repo for now.
We probably want to find some better solution to this at some point.
Sometimes github or the CI runner times out trying to checkout the
source and stays timing out forever.
Give it a three minute timeout otherwise the CI runner will stall
forever.
Adapted from LLVM version of pr-code-format.yml.
Copies a few scripts from LLVM to External/.
Runs self-hosted on X64.
Assumes clang-format 16.0.6 for formatting.
crueter