[GHC] #12199: GHC is oblivious to injectivity when solving an equality constraint

[GHC]

#12199: GHC is oblivious to injectivity when solving an equality constraint
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.0.1
  checker)                           |             Keywords:  TypeFamilies,
      Resolution:                    |  InjectiveFamilies
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #10833            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * keywords:  TypeFamilies, Injective => TypeFamilies, InjectiveFamilies


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12199#comment:3>
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