Hi Kyle,
> I'm seeing the failure below when trying to build git-annex. Can anyone > else reproduce this failure? Any ideas how to resolve it? > > --8<---------------cut here---------------start------------->8--- > % git describe > v0.16.0-400-g4f36d98f7b > > % ./pre-inst-env guix build -K --check git-annex > Utility/Exception.hs:29:1: error: > Bad interface file: > /gnu/store/qb3knv1h536sdjqc4nfkm3j1l8n7q87a-ghc-exceptions-0.10.0/lib/ghc-8.4.3/exceptions-0.10.0/Control/Monad/Catch.dyn_hi > Something is amiss; requested module > exceptions-0.10.0:Control.Monad.Catch differs from name found in the > interface file exceptions-0.10.0:Control.Monad.Catch (if these names look the > same, try again with -dppr-debug) > | > 29 | import Control.Monad.Catch as X hiding (Handler) > | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ It seems to me that this is a more general problem affecting all of our Haskell packages. The configure phase that you didn’t paste should show that modules are provided by slightly different packages. The haskell-build-system suffers from non-determinism. It might just be limited to the package database files that are generated by ghc-pkg (where readdir is used and the result isn’t sorted). I’m opening a bug report for this issue. -- Ricardo
