[Hackage] #817: "main-is" misparsed in if/else, only by sdist

[Hackage]

#817: "main-is" misparsed in if/else, only by sdist
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  Reporter:  jeffwheeler    |        Owner:          
      Type:  defect         |       Status:  new     
  Priority:  normal         |    Milestone:          
 Component:  Cabal library  |      Version:  1.10.0.0
  Severity:  normal         |     Keywords:          
Difficulty:  unknown        |   Ghcversion:          
  Platform:                 |  
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Comment(by duncan):

 Another example http://hpaste.org/48025

 Two problems: one is the way sdist uses flatten, and the other is that
 monoid instance for main-is concatenates rather than picks the last. sdist
 should not use flatten, it needs to get the collection of values.

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Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/817#comment:1>
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