[GHC] #11345: Template Haskell's handling of infix GADT constructors is broken

[GHC]

#11345: Template Haskell's handling of infix GADT constructors is broken
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        Reporter:  RyanGlScott       |                Owner:  RyanGlScott
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Template Haskell  |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by RyanGlScott):

 Replying to [comment:2 jstolarek]:
 > Adding a new constructor will force TH clients to implement handling of
 infix constructors even in situations where they don't care about
 infixity, whereas adding a new field to `GadtC` will be simple to handle -
 programmers can simply ignore that field in situations where it is
 irrelevant.

 Fair enough. By that logic, we don't need `InfixC` either, but I'll avoid
 making breaking changes for now.

 Let's see if I can get this done by the 8.0 release—fingers crossed!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11345#comment:3>
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