Hi all, While working with complex types with lots of arguments etc. errors are becoming annoying very fast. For example, GHC prints errors in this way:
Expected type: <type without any synonyms> Actual type: <type with synonyms> Now I have to expand that synonym in my head to understand the error. I was wondering if implementing something like this is possible: In type error messages, GHC also prints types that are cleaned from type synonyms. Maybe something like this: Expected type: <type1> (without synonyms): <type1, synonyms are expanded> Actual type: <type2> (without synonyms): <type2, synonyms are expanded> If this is not always desirable for some reason, we can hide this behavior behind a flag. What do GHC devs think about this? Is this, in theory, possible to do? How hard would it be to implement this? Thanks. _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs