[GHC] #1769: Deriving Typeable for data families

[GHC]

#1769: Deriving Typeable for data families
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  Reporter:  chak                                |          Owner:  chak            
      Type:  task                                |         Status:  closed          
  Priority:  low                                 |      Milestone:  7.0.1           
 Component:  Compiler (Type checker)             |        Version:  6.9             
Resolution:  fixed                               |       Keywords:                  
  Testcase:  indexed-types/should_compile/T1769  |      Blockedby:                  
Difficulty:  Unknown                             |             Os:  Unknown/Multiple
  Blocking:                                      |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown                        |  
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Comment(by mitar):

 Wouldn't it be enough to define?

 {{{
 instance Typeable1 T where
   typeOf1 _ = mkTyConApp (mkTyCon "T") []
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1769#comment:13>
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