On 1 December 2010 03:54, Michael Snoyman <mich...@snoyman.com> wrote: > On Wed, Dec 1, 2010 at 4:07 AM, Thomas Schilling > <nomin...@googlemail.com> wrote: >> I think a nicer way to solve that issue is to use Cabal's MIN_VERSION macros. >> >> 1. Add CPP to your extensions. This will cause cabal to >> auto-generate a file with MIN_VERSION_<pkg> macros for each <pkg> in >> build-depends. >> >> 2. GHC 6.12.* comes with template-haskell 2.4, so to test for that use: >> >> #ifdef MIN_VERSION_template_haskell(2,4,0) >> .. ghc-6.12.* code here. >> #endif >> >> This should make it more transparent to the user.
> Also, I think > > #if GHC7 > ... > #endif > > is more transparent than a check on template-haskell. Note that in many cases it is inappropriate to use the ghc version as a proxy for a library version since most libraries are upgradable independently of GHC. Duncan _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe