[Hackage] #255: avoid rebuilding shared code

[Hackage]

#255: avoid rebuilding shared code
----------------------------+-----------------------------------------------
  Reporter:  guest          |        Owner:         
      Type:  enhancement    |       Status:  new    
  Priority:  normal         |    Milestone:         
 Component:  Cabal library  |      Version:  1.2.3.0
  Severity:  normal         |     Keywords:         
Difficulty:  normal         |   Ghcversion:  6.8.2  
  Platform:                 |  
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 It seems like a common use of Cabal is to build a library and an
 executable based on that library.  Is there a good way to do this right
 now?

 If you specify a stanza for each, the code gets compiled twice (or N+1
 times for N executables).  That gets annoying if there is a lot of shared
 code (consider a libdarcs).

 It would be nice if the executable could just build-depends the library we
 are currently trying to build.  (One could also imagine a version
 constraint like 'this version' which explicitly says to use the version
 being built in this cabal file)

 Thanks!  (Eric Kow)

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Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/255>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects