#11519: Inferring non-tau kinds -------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: TypeInType 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 simonpj): Yes I think that using `ExpType`s is exactly the right thing here. Interestingly we used to have a variant of `ExpType`, called `ExpKind`: {{{ data ExpKind = EK TcKind (TcKind -> SDoc) }}} but that has gone now. I'm not sure how you managed to keep the error messages good without that `SDoc` argument, but I'm all for the simplification. So now perhaps `ExpType` will do just fine. I also agree with Adam about explicit quantification. (Both are independently useful.) And in fact I think that the declaration he give is accepted already -- an entirely un-documented feature. Adding some docs for it would be good. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11519#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler