#209: Implement "package()" configurations predicate ----------------------------+----------------------------------------------- Reporter: duncan | Owner: nominolo Type: enhancement | Status: new Priority: normal | Milestone: Cabal-1.8 Component: Cabal library | Version: 1.2.3.0 Severity: normal | Resolution: Keywords: | Difficulty: hard (< 1 day) Ghcversion: 6.8.2 | Platform: ----------------------------+----------------------------------------------- Comment (by duncan): Of course if we want it for `build-depends` then we may also want it for other dependencies like `pkgconfig-depends` or `build-tools`. So we should bear that in mind in designing a syntax. For example darcs might like to use: {{{ pkgconfig-depends: libcurl if pkgconfig-depends(libcurl >= 7.19.1) -- curl 7.19.1 has bug-free pipelining cpp-options: -DCURL_PIPELINING_DEFAULT }}} as syntactic sugar for: {{{ flag curl-pipelining description: Use libcurl's HTTP pipelining. ... pkgconfig-depends: libcurl if flag(curl-pipelining) -- curl 7.19.1 has bug-free pipelining pkgconfig-depends: libcurl >= 7.19.1 cpp-options: -DCURL_PIPELINING_DEFAULT else pkgconfig-depends: libcurl < 7.19.1 }}} Note of course the above doesn't work well yet anyway, it needs #342 to be implemented. -- Ticket URL: http://hackage.haskell.org/trac/hackage/ticket/209#comment:7 Hackage http://haskell.org/cabal/ Hackage: Cabal and related projects