[GHC] #14348: Poly-kinded definitions silently introduce extra type arguments captured by TypeApplications

[GHC]

#14348: Poly-kinded definitions silently introduce extra type arguments captured by
TypeApplications
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        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:                    |
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Comment (by RyanGlScott):

 I believe what you are looking for is
 [https://github.com/goldfirere/ghc/pull/74 explicit specificity]. This is
 a GHC "proposal" that isn't fully baked yet, or even been formally
 proposed yet—I'm only showing this to you since you asked nicely ;)

 This would allow you to write:

 {{{#!hs
 data Wrap {k} (a :: k)
 }}}

 To tell GHC to treat `k` as though it were inferred (even though it's
 technically written in the source) and thus not available for visible type
 application.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14348#comment:3>
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