[GHC] #8848: Warning: Rule too complicated to desugar

[GHC]

#8848: Warning: Rule too complicated to desugar
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        Reporter:  carter                        |            Owner:
            Type:  bug                           |           Status:
        Priority:  normal                        |  closed
       Component:  Compiler                      |        Milestone:
      Resolution:  fixed                         |  7.10.1
Operating System:  Unknown/Multiple              |          Version:
 Type of failure:  None/Unknown                  |  7.8.1-rc2
       Test Case:                                |         Keywords:
  simplCore/should_compile/T8848, T8848a         |     Architecture:
        Blocking:                                |  Unknown/Multiple
                                                 |       Difficulty:
                                                 |  Unknown
                                                 |       Blocked By:
                                                 |  Related Tickets:
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Comment (by carter):

 @thoughtpolice, if there was a path to getting this into 7.8.3 that I
 could help with making happen, i'm willing to help do some leg work
 (though it touches on pieces of GHC i'm not yet familiar with).

 I believe I can work around this limitation in SPECIALIZE for now, but if
 there was a way to help get it into 7.8.3, please let me know.

 (though i'll be excited to revisit my engineering on 7.9 / 7.10 on way or
 another)

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8848#comment:11>
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