[GHC] #10156: Unable to coerce with flipped Coercible context

[GHC]

#10156: Unable to coerce with flipped Coercible context
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        Reporter:  ekmett            |                   Owner:
            Type:  feature request   |                  Status:  infoneeded
        Priority:  normal            |               Milestone:
       Component:  Compiler (Type    |                 Version:  7.10.1-rc2
  checker)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by goldfire):

 * status:  new => infoneeded


Comment:

 I can't reproduce this with RC2. I wouldn't expect it to work in 7.8, but
 it should work in 7.10. (When I saw the ticket, I was quite surprised it
 didn't, as I thought the new solver handled symmetry!)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10156#comment:3>
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