#11509: Incorrect error message in StandaloneDeriving: "The data constructors of <typeclass> are not all in scope" -------------------------------------+------------------------------------- Reporter: edsko | Owner: RyanGlScott Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1-rc1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * owner: => RyanGlScott Comment: After #10598, GHC has been refactored to propagate information about which deriving mechanism was chosen further into the compiler, so fixing this issue properly (i.e., erroring on stock or newtype deriving, but not on anyclass deriving) is much easier now. I'll take this one. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11509#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler