[GHC] #7026: Impredicative implicit parameters

[GHC]

#7026: Impredicative implicit parameters
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    Reporter:  Ashley Yakeley           |       Owner:                           
        Type:  bug                      |      Status:  new                      
    Priority:  normal                   |   Milestone:  _|_                      
   Component:  Compiler (Type checker)  |     Version:  7.4.2                    
    Keywords:                           |          Os:  Unknown/Multiple         
Architecture:  Unknown/Multiple         |     Failure:  GHC rejects valid program
  Difficulty:  Unknown                  |    Testcase:                           
   Blockedby:                           |    Blocking:                           
     Related:                           |  
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Comment(by simonpj):

 Yes, maybe use a wrapper like this
 {{{
 newtype VM a = VM ((?jvmenv :: VMEnv) => IO a)
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7026#comment:3>
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