[Hackage] #763: Warn about unused flags in Cabal file

[Hackage]

#763: Warn about unused flags in Cabal file
----------------------------+-----------------------------------------------
  Reporter:  tibbe          |        Owner:         
      Type:  enhancement    |       Status:  new    
  Priority:  normal         |    Milestone:         
 Component:  Cabal library  |      Version:  1.8.0.6
  Severity:  normal         |     Keywords:         
Difficulty:  unknown        |   Ghcversion:         
  Platform:                 |  
----------------------------+-----------------------------------------------
 Cabal should output a warning during configure if a flag is defined but
 never used. I almost forgot to delete an old flag due to removing its use
 sites but not its definition.

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Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/763>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects