[GHC] #8776: Displaying pattern synonym for a GADT

[GHC]

#8776: Displaying pattern synonym for a GADT
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        Reporter:  monoidal          |            Owner:  cactus
            Type:  bug               |           Status:  merge
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by cactus):

 Simon,

 I've reverted the part of the change that tunneled `AnId`s via the
 `IfaceDecl` path. We should have a discussion on the eventual Correct(tm)
 implementation, but for now, this passes all the existing GHCi tests and
 also fixes the pattern synonym issue at hand.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8776#comment:16>
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