#8813: further support deriving instances Typeable1, Typeable2, etc ----------------------------------------------+---------------------------- Reporter: maeder | Owner: Type: task | Status: closed Priority: normal | Milestone: Component: Compiler | Version: Resolution: wontfix | 7.8.1-rc1 Operating System: Unknown/Multiple | Keywords: Type of failure: GHC rejects valid program | Architecture: Test Case: | Unknown/Multiple Blocking: | Difficulty: Unknown | Blocked By: | Related Tickets: ----------------------------------------------+---------------------------- Comment (by maeder): An (derived) instance of Data.!OldTypeable.Typeable cannot be used for a context based on Data.Typeable. Therefore Data.!OldTypeable is pretty useless. Is it no option (i.e. better) to make Typeable{1,..,7} behave like Typeable (with a warning)? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8813#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler