On Thu, 2010-07-29 at 20:54 +0200, Phyx wrote:
I’m trying to use the Cabal api to preprocess a .cabal file and have it run the preprocessors.
But preprocessSources takes a PackageDescription (which I get from a GenericPackageDescription) so this does not contain any information on the Executables or Libraries in the cabal file. So nothing gets executed.
The GenericPackageDescription is a bit confusing. It contains a PackageDescription but you should really ignore that one. That one only contains the top level meta info about the package. To get a PackageDescription from a GenericPackageDescription you either need to flatten it, or to pick a particular configuration, ie resolve all the conditionals. If you want to build the package then flattening does not make sense, you must instead finalise it, using finalizePackageDescription. Duncan