[GHC] #7485: Tuple constraints not properly kinded

[GHC]

#7485: Tuple constraints not properly kinded
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        Reporter:  goldfire          |                   Owner:
            Type:  bug               |                  Status:  closed
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.7
      Resolution:  invalid           |                Keywords:
Operating System:  Unknown/Multiple  |  ConstraintKinds
 Type of failure:  None/Unknown      |            Architecture:
      Blocked By:                    |  Unknown/Multiple
 Related Tickets:                    |               Test Case:
                                     |                Blocking:
                                     |  Differential Revisions:
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Comment (by ekmett):

 FWIW- After Simon posted the original suggestion for how to do this, Dan
 Doel and I implemented it without problem in Ermine in an afternoon.

 It is a rather nice fix for this problem.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7485#comment:6>
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