[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:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:  8.0.1
       Component:  Compiler (Type    |                 Version:  6.12.1
  checker)                           |
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #8423             |  Differential Revisions:
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Changes (by jstolarek):

 * cc: jan.stolarek@… (removed)
 * cc: jstolarek (added)


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4259#comment:35>
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