[GHC] #14061: `instance Eq Dyn`

[GHC]

#14061: `instance Eq Dyn`
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        Reporter:  zaoqi             |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by AntC):

 Repeat of ticket #14004. The answer is already posted there. You can't
 make `instance Eq Dyn` with that definition for `Dyn`. But there are two
 suggestions for different approaches. This is not a bug; not a feature
 request.

 @zaoqi please do not use Trac as a help forum: use StackOverflow or reddit
 or haskell cafe.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14061#comment:1>
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