patch applied (cabal-branches/cabal-1.4): Add PackageIndex.dependencyGraph that builds a Graph

Tue May 6 16:43:26 PDT 2008 Duncan Coutts * Add PackageIndex.dependencyGraph that builds a Graph Useful for some more tricky queries. M ./Distribution/Simple/PackageIndex.hs +34 View patch online: http://darcs.haskell.org/cabal-branches/cabal-1.4/_darcs/patches/20080506234...