[GHC] #8920: Alternative GADT syntax

[GHC]

#8920: Alternative GADT syntax
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        Reporter:  guest             |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.8.1-rc2
  (Parser)                           |
      Resolution:                    |             Keywords:  gadts
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 strake888):

 why?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8920#comment:4>
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