[GHC] #8707: Kind inference fails in data instance definition

[GHC]

#8707: Kind inference fails in data instance definition
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        Reporter:  goldfire          |            Owner:  jstolarek
            Type:  feature request   |           Status:  new
        Priority:  low               |        Milestone:
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by goldfire):

 Given the (current) separation between types and kinds, I'm not 100%
 convinced that the `SingDF` case is the same as your `T` case, but I can
 see how these might become the same in the future. I agree with the
 reclassification as a feature request, and that there are bigger fish to
 fry, so I agree to table this one.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8707#comment:15>
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