I don't understand? If I have a pragma in `Setup.hs` that enables CPP, and there is a macro giving the version number for the installed cabal
#326: Cabal should support Cabal-version-dependent Setup.hs ----------------------------+----------------------------------------------- Reporter: claus | Owner: Type: enhancement | Status: new Priority: normal | Milestone: Component: Cabal library | Version: 1.2.3.0 Severity: normal | Resolution: Keywords: | Difficulty: normal Ghcversion: 6.8.2 | Platform: ----------------------------+----------------------------------------------- Comment (by duncan): Replying to [comment:8 claus]: package that `Setup.hs` is using, why would `runhaskell Setup` not work? You're right, if we also installed the .h file along with Cabal itself and put a suitable entry into the `include-dirs` for Cabal's registration then with a CPP pragma and a #include in your `Setup.hs` it would work for `runghc`. It would not work for hugs or nhc98 because hugs does not grok the CPP pragma and neither let us specify extra info like `include-dirs` in the package resistration, so even if they did cpp they would not be able to find the header file. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/326#comment:9 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects