[GHC] #7543: Constraint synonym instances

[GHC]

#7543: Constraint synonym instances
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        Reporter:  monoidal          |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.6.1
      Resolution:  duplicate         |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13267            |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  new => closed
 * resolution:   => duplicate
 * related:   => #13267


Comment:

 In #13267, we decided to simply disallow instances for constraint
 synonyms.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7543#comment:14>
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