#12652: Type checker no longer accepting code using function composition and rank-n types -------------------------------------+------------------------------------- Reporter: ezyang | Owner: simonpj Type: bug | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler (Type | Version: 8.1 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): Agree with Richard. If we can impredicatively use `($)` without `ImpredicativeTypes`, I don't see why we'd need it for `(.)`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12652#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler