[GHC] #12271: Remove magic from type defaulting

[GHC]

#12271: Remove magic from type defaulting
-------------------------------------+-------------------------------------
        Reporter:  crockeea          |                Owner:
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  duplicate         |             Keywords:
                                     |  ExtendedDefaultRules
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  8171              |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by crockeea):

 * status:  new => closed
 * resolution:   => duplicate
 * related:   => 8171


Comment:

 I believe that ticket covers this case. I made added a comment there;
 closing this as duplicate.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12271#comment:2>
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