[GHC] #9205: Deriving Typeable for poly-kinded data family gives confusing error message

[GHC]

#9205: Deriving Typeable for poly-kinded data family gives confusing error message
-------------------------------------+------------------------------------
        Reporter:  dfranke           |            Owner:
            Type:  bug               |           Status:  closed
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.8.2
      Resolution:  fixed             |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+------------------------------------

Comment (by simonpj):

 Fixed, as in: it compiles with or without `PolyKinds`.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9205#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler