I wonder if someone is interested in expanding the use of Program inside Cabal. There's a type in cabal Distribution.Program.Program which does some nice stuff for describing programs internally for Cabal. A program is basically a name, a location, and some arguments: -- |Represents a program which cabal may call. data Program = Program { -- |The simple name of the program, eg ghc programName :: String -- |The name of this program's binary, eg ghc-6.4 ,programBinName :: String -- |Default command-line args for this program ,programArgs :: [String] -- |Location of the program. eg. \/usr\/bin\/ghc-6.4 ,programLocation :: ProgramLocation } deriving (Read, Show) One nice thing about using it is that any program that is registered with Cabal will get some "configure" and ".cabal" helpers like --with-foo-args --foo-path= and extra-foo-args: There's also good default behavior for trying to find "foo" in PATH, being able to override its location, etc. There's also a hook for adding programs in a Setup.lhs script so that you get these flags and such so that you don't have to write all the PATH logic inside Setup.lhs. The only thing that's wrong w/ Program is that its not used all over Cabal :) Tools like ranlib do use it, I think, but not all preprocessors and the compilers don't use it. Does anyone feel like digging around in Cabal and expanding the use of Program so that we have more consistent flags and such? Some basic TODOs are here: http://hackage.haskell.org/trac/hackage/search?q=Distribution.Program&ticket=on peace, isaac