George Colpitts writes:

Hi

I believe llvm does not work in this alpha as 21936 is still open. Is that correct?

Indeed we do not yet support LLVM 15 but all previous LLVM versions continue to work. We can try to fix this for the final release.

I also believe that when it does work it will require llvm 15 which will be incompatible with earlier versions of ghc. Is that correct?

Early indications suggest that supporting LLVM 15 will require that we raise the minimum supported version to LLVM 13. Cheers, - Ben