#10598: DeriveAnyClass and GND don't work well together -------------------------------------+------------------------------------- Reporter: osa1 | Owner: RyanGlScott Type: bug | Status: patch Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 7.11 Resolution: | Keywords: Generics Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2280 Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): Another possibility: we allow the use of multiple `deriving`s after a datatype. Something like: {{{#!hs newtype Foo = Foo Bar deriving (A, B, C) deriving builtin (D, E, F) deriving newtype (G, H, I) deriving default (J, K, L) }}} Pros: this would be a lot more consistent with the treatment for standalone `deriving` declarations. Cons: we'd have to significantly rework the way we parse `data`/`newtype` declarations. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10598#comment:37 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler