[GHC] #10348: HEAD: `KnownNat` does not imply `Typeable` any more

[GHC]

#10348: HEAD: `KnownNat` does not imply `Typeable` any more
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        Reporter:  heisenbug         |                   Owner:  diatchki
            Type:  bug               |                  Status:  new
        Priority:  highest           |               Milestone:  7.12.1
       Component:  Compiler (Type    |                 Version:  7.11
  checker)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  GHC rejects       |               Test Case:
  valid program                      |                Blocking:
      Blocked By:                    |  Differential Revisions:
 Related Tickets:                    |
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Comment (by heisenbug):

 Ping. Any chance to fix this, so that I can swim with GHC master again?
 ''Iavor, if you are buried in other stuff I could look into this myself.''

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10348#comment:2>
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