[GHC] #12271: Remove magic from type defaulting

[GHC]

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

 * keywords:   => ExtendedDefaultRules


Comment:

 I think this request is covered by #8171, can you confirm?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12271#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler