Hi Michael, my guess is that you've run into a design problem in GHC that causes the compiler to assign randomly differing package IDs every now and then. The result is that libraries built locally don't fit to ones downloaded from Hydra. The only way out of this mess is to garbage collect all Haskell packages by running
$ nix-store --delete /nix/store/*-ghc-7.8.4 and to compile or download everything again from scratch. Best regards, Peter _______________________________________________ nix-dev mailing list [email protected] http://lists.science.uu.nl/mailman/listinfo/nix-dev
