[GHC] #4259: Relax restrictions on type family instance overlap

[GHC]

#4259: Relax restrictions on type family instance overlap
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        Reporter:  lilac             |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  6.12.1
  checker)                           |             Keywords:  TypeFamilies,
      Resolution:                    |  InjectiveFamilies
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #8423             |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * keywords:  TypeFamilies => TypeFamilies, InjectiveFamilies


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4259#comment:38>
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