[GHC] #2721: Newtype deriving doesn't work with type families

[GHC]

#2721: Newtype deriving doesn't work with type families
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    Reporter:  rl                          |        Owner:                  
        Type:  feature request             |       Status:  new             
    Priority:  normal                      |    Milestone:  6.12 branch     
   Component:  Compiler                    |      Version:  6.10.1          
    Severity:  normal                      |   Resolution:                  
    Keywords:                              |   Difficulty:  Unknown         
    Testcase:  deriving/should_fail/T2721  |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple            |  
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Changes (by igloo):

  * owner:  igloo =>

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2721#comment:5>
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