[GHC] #8813: further support deriving instances Typeable1, Typeable2, etc

[GHC]

#8813: further support deriving instances Typeable1, Typeable2, etc
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        Reporter:  maeder                     |            Owner:  dreixel
            Type:  task                       |           Status:  merge
        Priority:  normal                     |        Milestone:
       Component:  Compiler                   |          Version:
      Resolution:                             |  7.8.1-rc1
Operating System:  Unknown/Multiple           |         Keywords:
 Type of failure:  GHC rejects valid program  |     Architecture:
       Test Case:                             |  Unknown/Multiple
        Blocking:                             |       Difficulty:  Unknown
                                              |       Blocked By:
                                              |  Related Tickets:
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Comment (by Jose Pedro Magalhaes <jpm@…>):

 In [changeset:"eea1b6f5fe254b249acc618ef5a82c3e52a27f8c/base"]:
 {{{
 #!CommitTicketReference repository="base"
 revision="eea1b6f5fe254b249acc618ef5a82c3e52a27f8c"
 Language extension wibble (see #8813)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8813#comment:33>
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