[GHC] #8422: type nats solver is too weak!

[GHC]

#8422: type nats solver is too weak!
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        Reporter:  carter                     |            Owner:
            Type:  bug                        |           Status:  new
        Priority:  highest                    |        Milestone:  7.8.1
       Component:  Compiler (Type checker)    |          Version:  7.7
      Resolution:                             |         Keywords:
Operating System:  Unknown/Multiple           |     Architecture:
 Type of failure:  GHC rejects valid program  |  Unknown/Multiple
       Test Case:                             |       Difficulty:  Unknown
        Blocking:                             |       Blocked By:
                                              |  Related Tickets:
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Comment (by carter):

 i tried getting solver example in the status report to work, and it
 doesn't :(

 http://ghc.haskell.org/trac/ghc/wiki/Status/Oct13

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8422#comment:2>
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