[GHC] #9090: Untouchable higher-kinded type variable in connection with RankNTypes, ConstraintKinds and TypeFamilies

[GHC]

#9090: Untouchable higher-kinded type variable in connection with RankNTypes,
ConstraintKinds and TypeFamilies
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        Reporter:  kosmikus                   |            Owner:
            Type:  bug                        |           Status:  new
        Priority:  normal                     |        Milestone:
       Component:  Compiler (Type checker)    |          Version:  7.8.2
      Resolution:                             |         Keywords:
Operating System:  Unknown/Multiple           |     Architecture:
 Type of failure:  GHC rejects valid program  |  Unknown/Multiple
       Test Case:                             |       Difficulty:  Unknown
        Blocking:                             |       Blocked By:
                                              |  Related Tickets:
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Comment (by MikeIzbicki):

 I believe I've also encountered this bug.  My code base is quite a bit
 more complicated, so I don't know if it will be helpful to look at, but
 I've got a description of the problem posted in the README
 (https://github.com/mikeizbicki/typeparams#a-bug-in-ghc).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9090#comment:2>
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