#14348: Poly-kinded definitions silently introduce extra type arguments captured by TypeApplications -------------------------------------+------------------------------------- Reporter: gallais | Owner: (none) Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler (Type | Version: 8.0.1 checker) | Keywords: Resolution: invalid | TypeApplications Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by gallais): If it's expected behaviour then I suppose what I'd really like is a distinction between "user-written" and "user-introduced". So that I may keep the kind annotations (which are helpful documentation when the kinds are complicated) whilst not having these extra arguments. E.g. {{{#!haskell data Wrap (k :: Kind) (a :: k) -- user introduced: can be explicitly set via @ data Wrap (a :: k) -- user written: cannot be explicitly set via @ wrap :: forall k (a :: k). Wrap a -- user introduced wrap :: forall (a :: k). Wrap a -- user written }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14348#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler