[Hackage] #689: Package checker shouldn't warn about deprecated extensions inside conditionals

[Hackage]

#689: Package checker shouldn't warn about deprecated extensions inside
conditionals
--------------------------------+-------------------------------------------
  Reporter:  guest              |        Owner:         
      Type:  defect             |       Status:  new    
  Priority:  normal             |    Milestone:         
 Component:  hackageDB website  |      Version:  1.6.0.3
  Severity:  normal             |     Keywords:         
Difficulty:  unknown            |   Ghcversion:         
  Platform:                     |  
--------------------------------+-------------------------------------------
 Hello,

 I uploaded a package to Hackage (extcore 0.6) that contains the following
 text in the Library section in the .cabal file:

 {{{
   if impl(ghc > 6.8.2) {
      build-depends:syb
   }
   else {
      extensions: PatternSignatures
   }
 }}}

 The Hackage package checker warned me:

 "Deprecated extensions: 'PatternSignatures'. Instead of
 'PatternSignatures' use 'ScopedTypeVariables'."

 This seems like a bug to me. Of course PatternSignatures is deprecated;
 that's why it's in a clause that only applies with a version of GHC less
 than 6.8.2. Warnings should trigger only for extensions that are
 deprecated in the version that the extension is declared for.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/689>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects