[GHC] #10598: DeriveAnyClass and GND don't work well together

[GHC]

#10598: DeriveAnyClass and GND don't work well together
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        Reporter:  osa1              |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
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Comment (by simonpj):

 Your list sounds plausible to me, Andres.  Re "I cannot think of a good
 reason not to require defaults for all methods right now?", I agree, but I
 assume you mean "either a generic default method or a polymorphic default
 method is provided".  Remember there are those two forms of default
 method.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10598#comment:9>
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