#10598: DeriveAnyClass and GND don't work well together -------------------------------------+------------------------------------- Reporter: osa1 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by rwbarton): I'm confused by a lot of this thread. As I mentioned in comment:2, `DeriveAnyClass` will never derive `Functor`, even when it is the only deriving extension enabled. So I would expect the presence of `DeriveAnyClass` to be irrelevant to any attempt to derive `Functor`, whatever other deriving extensions are enabled. And I think this behavior is (poorly) documented, by the word "other" in the description of `DeriveAnyClass`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10598#comment:16 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler