On Sun, Mar 1, 2009 at 10:45 AM, Manlio Perillo <manlio_peri...@libero.it> 
wrote:
Hi.
...
One last thing: is it possible to define "macros" in Cabal?
In my package, I have n executables, that have many dependencies in common.
I would like to avoid having to repeat the same dependencies for each
executable block.



Thanks   Manlio Perillo

You can hoist the common build-depends out of the executable stanzas. ie. from 
xmonad-utils.cabal:

build-depends:      base<4, X11>=1.3, ghc>=6.8, unix, random>=1.0
...
executable:         hxsel
main-is:            Hxsel.hs
hs-source-dirs:     src
ghc-options:        -funbox-strict-fields -Wall
ghc-prof-options:   -prof -auto-all

executable:         hxput
main-is:            Hxput.hs
hs-source-dirs:     src
ghc-options:        -funbox-strict-fields -Wall
ghc-prof-options:   -prof -auto-all
....

Notice that though hxput and hxsel need the packages in the top-level 
build-depends, they don't need to declare it.

--
gwern

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