#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): Hrmm, when we have something like {{{ newtype F p f a = F { runF :: p a (f (F p f a)) } }}} do we get stuck again because of the fact that p has two args and the coercion of a has to be used on both sides of it? {{{ Free = F (,) Cofree = F Either }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9123#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler