#11376: Inconsistent specified type variables among functions and datatypes/classes when using -XTypeApplications -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.1 checker) | Keywords: Resolution: | TypeApplications Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by kosmikus): I also noticed that {{{ $ ghci -XTypeInType -XTypeApplications -XScopedTypeVariables -fprint- explicit-foralls GHCi, version 7.11.20151229: http://www.haskell.org/ghc/ :? for help Prelude> data Prox a = Prox Prelude> prox1 :: forall a . Prox a; prox1 = Prox Prelude> prox2 :: forall (a :: k) . Prox a; prox2 = Prox Prelude> :t prox1 prox1 :: forall {k} (a :: k). Prox a Prelude> :t prox2 prox2 :: forall k (a :: k). Prox a }}} Is this difference in treatment deliberate? I would have expected that for `k` to be explicit, I'd have to write {{{ Prelude> prox3 :: forall k (a :: k). Prox a; prox3 = Prox }}} Is there a way to mention a type/kind variable but to still make it implicit? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11376#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler