patch applied (cabal-install): Change Dependency module to use the LocalIndex ADT

Fri Jan 18 14:07:03 PST 2008 Duncan Coutts * Change Dependency module to use the LocalIndex ADT The whole Dependency module is pure now, no IO since it takes the indexes as arguments, rather than the many more args required to do the IO to load up the indexes. Much nicer. Also update all callers. M ./Hackage/Dependency.hs -70 +46 M ./Hackage/Fetch.hs -5 +10 M ./Hackage/Info.hs -1 +6 M ./Hackage/Install.hs -3 +11 M ./Hackage/Upgrade.hs -3 +10