On a semi-related note, I’ve added yesterday’s snapshot of LLVM 16.x to Gentoo now. It’s not visible to our users by default but hopefully it’ll encourage more of them to test it. Having to push new snapshots should also keep me motivated to ensure that LLVM 16.x builds continuously, and get quicker reports for build and test failures.
I’ll also try to help getting config support ship-shape, so we could use it effectively to test configure scripts. I’m going to make a bigger announcement and request for testing in Gentoo once all’s ready.