Re: [Haskell-cafe] Inject cabal version or VCS version as a CPP macro

Thanks, this is exactly what I was looking for! I might look some more into exposing VCS tags too, however. On Wed, Feb 22, 2012 at 12:25 PM, Roel van Dijk wrote:

For each package "myPackage" Cabal generates a module containing, among other things, the package's version as a Haskell value:

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import Paths_myPackage ( version ) import Data.Version ( showVersion ) main = showVersion version

See also "Accessing data files from package code" in http://www.haskell.org/cabal/users-guide/

I do not now how to expose information from the VCS.

2012/2/22 Eugene Kirpichov :

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Hi,

I'd like my program to print something like "this is $program 1.0.4 git 45fea6b" when invoked with --version, or at least just the 1.0.4 part.

Can Cabal expose the version as a preprocessor macro by default, or do I have to use Build-Type: Custom and add a preprocessing step of my own?

-- Eugene Kirpichov Principal Engineer, Mirantis Inc. http://www.mirantis.com/ Editor, http://fprog.ru/