[GHC] #10742: GHC cannot deduce (irrelevant) reflexive type equality.

[GHC]

#10742: GHC cannot deduce (irrelevant) reflexive type equality.
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        Reporter:  ntc2              |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler (Type    |                 Version:  7.10.2
  checker)                           |                Keywords:  TypeLits
      Resolution:                    |  GADTs
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |               Test Case:
  valid program                      |  polykinds/T10742
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by ntc2):

 We worked around this problem in 7.10.2 so please go ahead and close the
 issue. I would close it myself, but I'm not sure which of "works in HEAD;
 please merge" and "close as fixed" to choose for the resolution reason.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10742#comment:4>
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