#11251: isInstance does not work on Typeable with base-4.8 anymore -------------------------------------+------------------------------------- Reporter: songzh | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: Component: Template Haskell | Version: 7.10.1 Resolution: | Keywords: Typeable, | isInstance Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Re comment:3, we automatically derive a `Typeable` instance for every type, so it should probably be an error to derive it explicitly. Does everyone agree? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11251#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler