#8631: Need ImpredicativeTypes for GeneralizedNewtypeDeriving? -------------------------------------+------------------------------------ Reporter: goldfire | Owner: Type: bug | Status: new 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 goldfire): Bah. I was thinking of exactly that code when I suggested enabling `ImpredicativeTypes`, but I didn't look closely before making the suggestion. I'll see if I can take a look later this week and come up with an implementation plan. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8631#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler