#9123: Need for higher kinded roles -------------------------------------+------------------------------------ Reporter: simonpj | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by ekmett): Let's remove `join` from `Monad` for now, and see if we can't resolve this issue before we're forced to release. That lets GND work for `Monad`, which I agree is critical; it is a very common idiom to hide `transformers` monads inside a newtype wrapper and derive `Monad` and the related mtl instances and I'd hate to lose that. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9123#comment:14 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler