[GHC] #13950: IncoherentInstances

[GHC]

#13950: IncoherentInstances
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        Reporter:  zaoqi             |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:  invalid           |             Keywords:
                                     |  IncoherentInstances
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 I think hsyl20 nailed it. I believe this is nothing more than an issue of
 type variable scoping with `forall` (which I clarified further in #13953).
 Please reopen if you disagree.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13950#comment:2>
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