#5863: Deriving Typeable for data families ---------------------------------+------------------------------------------ Reporter: simonpj | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.6.2 Component: Compiler | Version: 7.4.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by dreixel): We do allow (standalone) `deriving Typeable` for `T`, so I guess the way to fix this is to simply disable `deriving Typeable` for family instances. Unless we want to wait for #7897, of course. -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/5863#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler