#8984: Improve output of failed GeneralizedNewtypeDeriving coercion due to type roles -------------------------------------+------------------------------------- Reporter: haasn | Owner: Type: feature | Status: new request | Milestone: Priority: normal | Version: 7.8.1 Component: Compiler | Keywords: (Type checker) | Architecture: Unknown/Multiple Resolution: | Difficulty: Unknown Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by goldfire): The patch above does not implement the proposal in comment:6 and agreed to in comment:7. I'll implement this proposal soon, but it will likely miss the 7.10 branch. This is OK -- it won't hurt anyone to have this unfixed. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8984#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler