Hi Jacob, Jacob MacDonald <jaccar...@gmail.com> writes:
> To reproduce, just guix environment --ad-hoc ghc -- ghci. ghc@8.4.3 > works. Seems like this may be related to some Prelude changes upstream > (https://gitlab.haskell.org/ghc/ghc/issues/16563), but I'm not > familiar enough with GHC internals to really tell what's going on. > Interestingly, when I try to run plain old GHC on some source files > with 8.6.5 I get another seemingly unrelated error: > > Bad interface file: > /gnu/store/8v1sn5ns7r5n02aip0b0ypyyzb2y1i1a-ghc-8.4.3/lib/ghc-8.4.3/base-4.11.1.0/Prelude.hi > mismatched interface file versions (wanted "8065", got "8043") > | > 1 | import Test.Hspec (Spec, it, shouldBe) > | ^ I believe this should be fixed by 83aa656217. I made a mistake when refactoring the GHC 8.6 package definition, and it was not setting its search paths correctly. Can you try again and confirm that it’s fixed? Thanks! -- Tim
