[GHC] #11963: GHC introduces kind equality without TypeInType

[GHC]

#11963: GHC introduces kind equality without TypeInType
-------------------------------------+-------------------------------------
        Reporter:  ezyang            |                Owner:  goldfire
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.0.1-rc2
  checker)                           |
      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:                    |
-------------------------------------+-------------------------------------
Changes (by goldfire):

 * keywords:   => TypeInType


Comment:

 As it says in the user's guide, identifying the necessity for
 `-XTypeInType` is done on a best-effort basis. That said, I'm surprised
 this one is missed, because `k` is clearly used as both a kind and a type
 in the type of the data constructor.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11963#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler