patch applied (cabal-install): Take preferred versions into account in dependency planning

Sun Oct 5 22:51:29 PDT 2008 Duncan Coutts * Take preferred versions into account in dependency planning This means we can now globally prefer base 3 rather than 4. However we need to be slightly careful or we end up deciding to do silly things like rebuild haskell98 against base 3. That would happen because the h98 package doesn't constrain the choice to one or the other and we would prefer base 3. So we have to add that we really prefer whatever it uses currently (if any). M ./Distribution/Client/Dependency/TopDown.hs -12 +30 View patch online: http://darcs.haskell.org/cabal-install/_darcs/patches/20081006055129-adfee-7...