[GHC] #11351: Scoped type variables in pattern synonyms

[GHC]

#11351: Scoped type variables in pattern synonyms
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        Reporter:  Iceland_jack      |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  8.0.1-rc1
  checker)                           |             Keywords:
      Resolution:                    |  PatternSynonyms
Operating System:  Linux             |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"e2c7b7ee976dcabf12002265ddbe58017b794cb8/ghc"
 e2c7b7ee/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="e2c7b7ee976dcabf12002265ddbe58017b794cb8"
 Implement scoped type variables in pattern synonyms

 This fixes Trac #11351.   The implementation is pretty
 simple, happily.

 I took the opportunity to re-order the prov/req context
 in builder-ids, which was confusingly backwards.
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11351#comment:4>
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