[GHC] #4459: Polymorphic Data.Dynamic

[GHC]

#4459: Polymorphic Data.Dynamic
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    Reporter:  vivian                                |        Owner:              
        Type:  feature request                       |       Status:  new         
    Priority:  normal                                |    Milestone:  7.2.1       
   Component:  GHC API                               |      Version:  7.1         
    Keywords:  polymorphic, dynamic, class, linking  |     Testcase:              
   Blockedby:                                        |   Difficulty:              
          Os:  Unknown/Multiple                      |     Blocking:              
Architecture:  Unknown/Multiple                      |      Failure:  None/Unknown
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Comment(by vivian):

 In reality those functions should probably be in a type-environment monad.
 {{{
 applyDynamic :: Dynamic -> Dynamic -> TypeEnv (Maybe Dynamic)
 fromDynamic  :: Dynamic -> TypeEnv (Maybe a)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4459#comment:3>
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