patch applied (cabal-install): Add PackageInstalledConstraint to the PackageConstraint type

Mon Dec 15 14:45:38 PST 2008 Duncan Coutts * Add PackageInstalledConstraint to the PackageConstraint type This should be useful for things like preventing upgrading the base package for ghc. M ./Distribution/Client/Dependency/TopDown.hs -1 +36 M ./Distribution/Client/Dependency/Types.hs +1 View patch online: http://darcs.haskell.org/cabal-install/_darcs/patches/20081215224538-adfee-4...