[GHC] #13371: instance selection too eager

[GHC]

#13371: instance selection too eager
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        Reporter:  aavogt            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  high              |            Milestone:  8.2.1
       Component:  Compiler (Type    |              Version:  8.0.2
  checker)                           |
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  polykinds/T13371
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * status:  new => closed
 * testcase:   => polykinds/T13371
 * resolution:   => fixed


Comment:

 This is a bit of a big commit, but I think it'd be worth doing for 8.2

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13371#comment:9>
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