[GHC] #1496: Newtypes and type families combine to produce inconsistent FC(X) axiom sets

[GHC]

#1496: Newtypes and type families combine to produce inconsistent FC(X) axiom sets
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    Reporter:  sorear                   |       Owner:  simonpj         
        Type:  bug                      |      Status:  new             
    Priority:  normal                   |   Milestone:  7.6.2           
   Component:  Compiler (Type checker)  |     Version:  6.7             
    Keywords:                           |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple         |     Failure:  None/Unknown    
  Difficulty:  Unknown                  |    Testcase:                  
   Blockedby:                           |    Blocking:  5498            
     Related:                           |  
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Comment(by simonpj):

 See also [http://lukepalmer.wordpress.com/2013/03/04/how-gadts-inhibit-
 abstraction/ How GADTs inhibit abstraction]. I have not studied it closely
 but it's clearly relevant.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1496#comment:41>
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