On Tue, Sep 18, 2012 at 12:41:50PM +0200, Herbert Valerio Riedel wrote:
Is it always desirable to prefer the MIN_VERSION_ approach over a CABAL-flag approach for supporting multiple API versions of a dependent package (if both ways are possible)? And if not, when should I prefer which approach?
I'm not aware of any advantages of Cabal-flags over MIN_VERSION. If you use MIN_VERSION you can put :set -optP-include -optPdist/build/autogen/cabal_macros.h into a .ghci, and included it in the packages repository. That way you can use GHCi when developing on that package, without passing any CPP flags explicitly**. For that reason I prefer the MIN_VERSION-approach. Cheers, Simon ** An initial `cabal configure && cabal build` is still required, so that cabal_macros.h is generated.