[GHC] #7828: RebindableSyntax and Arrow

[GHC]

#7828: RebindableSyntax and Arrow
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        Reporter:  AlessandroVermeulen        |            Owner:
            Type:  bug                        |  jstolarek
        Priority:  normal                     |           Status:  new
       Component:  Compiler (Type checker)    |        Milestone:  7.10.1
      Resolution:                             |          Version:  7.6.2
Operating System:  Unknown/Multiple           |         Keywords:
 Type of failure:  GHC rejects valid program  |     Architecture:
       Test Case:                             |  Unknown/Multiple
        Blocking:                             |       Difficulty:  Unknown
                                              |       Blocked By:
                                              |  Related Tickets:
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Comment (by ross):

 Replying to [comment:18 simonpj]:
 > Ross that looks attractive.  Is it enough for desugaring?  That is, is
 the translation above what you would use for desugaring?  It looks a LOT
 simpler than the present desugaring!

 It's only part of it.  This would treat do and if commands as derived
 constructs, defined in terms of a kernel command language.  But that
 language would still need to be type-checked using the command rules (with
 their split environments), and would still need to be translated into
 expressions, as now.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7828#comment:19>
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