#8631: Need ImpredicativeTypes for GeneralizedNewtypeDeriving? -------------------------------------+------------------------------------ Reporter: goldfire | Owner: Type: bug | Status: merge Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by carter): I think i was hit by this when I was trying out LLVM-General on 7.8 RC, https://github.com/bscarlet/llvm-general/issues/83#issuecomment-34557918 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8631#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler