[GHC] #9043: Add missing type class instances for data types in GHC.Generics

[GHC]

#9043: Add missing type class instances for data types in GHC.Generics
-------------------------------------+------------------------------------
        Reporter:  ocharles          |            Owner:  dreixel
            Type:  feature request   |           Status:  patch
        Priority:  normal            |        Milestone:
       Component:  libraries/base    |          Version:  7.8.2
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
-------------------------------------+------------------------------------

Comment (by dreixel):

 Replying to [comment:14 simonpj]:
 > Well I suppose you'd need to derive Typeable for these generated data
 types.

 Ok, I'll do that; I hope it doesn't require much plumbing.

 Replying to [comment:14 simonpj]:
 > Mind you, IIRC now that we have `DataKinds` I think the Generics stuff
 could be done much more neatly, dramatically reducing the number of
 generated data types.
 >
 > This is all code you wrote, Pedro, isn't it?  So you are definitely free
 to improve it!

 Sure. All I'm worried about is backwards-compatibility, and the lack of
 #6024 doesn't help.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9043#comment:15>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler