[GHC] #10928: Refine pattern synonym signatures

[GHC]

#10928: Refine pattern synonym signatures
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        Reporter:  mpickering        |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.10.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
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Comment (by rodlogic):

 Replying to [comment:11 rodlogic]:
 > Sorry to inject myself here, but what about:
 > {{{
 > pattern P :: (Required b) => b -> T a => (Provided a)
 > }}}
 >
 > I.e. required constraints come before and provided after.
 Feeling stupid here now... this is the original proposal!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10928#comment:15>
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