[Haskell-cafe] Finding dependencies in cabal

OK, I'm trying to install Haskore and it depends on an old version of QuickCheck. I'm happy to hack and update, but is there any way of finding out which modules depend on QuickCheck rather than going through each file one by one? The build-depends is right in the cabal file, where it should be; however, I don't know who puts it there when the cabal package was built. Is there any way to find out? Dave Barton