[Hackage] #326: Cabal should support Cabal-version-dependent Setup.hs

[Hackage]

#326: Cabal should support Cabal-version-dependent Setup.hs
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  Reporter:  claus          |        Owner:         
      Type:  enhancement    |       Status:  new    
  Priority:  normal         |    Milestone:         
 Component:  Cabal library  |      Version:  1.2.3.0
  Severity:  normal         |   Resolution:         
  Keywords:                 |   Difficulty:  normal 
Ghcversion:  6.8.2          |     Platform:         
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Comment (by duncan):

 Replying to [comment:6 claus]:
 > Ah, I see - the macros are only temporarily available while building. I
 had assumed that Cabal would generate them permanently for each package,
 so that not only cabal-install could profit from them.

 Cabal makes them available while building, a macro for testing the version
 of each dependency. It's not just cabal-install, it's done in the Cabal
 lib. I'm not sure what you're suggesting as an alternative, that we
 install the .h files too? I guess that would let packages that build
 without using Cabal to use the version macros of packages that were built
 with Cabal. Is that what you mean? Is that a major advantage?

 The problem with using these macros for compiling Setup.hs is that that
 would only help cabal-install and would actively hinder everyone else.
 `runghc Setup` would stop working.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/326#comment:7>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects