#9761: A module can't usefully use both GeneralizedNewtypeDeriving and DeriveFoldable -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: dfeuer Type: bug | Status: new Priority: normal | Milestone: Component: Core | Version: 7.9 Libraries | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: GHC | Related Tickets: rejects valid program | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by dfeuer): * cc: core-libraries-committee@… (added) * owner: => dfeuer * component: Compiler (Type checker) => Core Libraries Comment: Reid Barton thinks this is probably caused by the accidental redundant `Foldable` contexts on `Foldable` members. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9761#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler