patch applied (cabal-install): Handle constraints on paired packages

Sat Oct 4 22:19:19 PDT 2008 Duncan Coutts * Handle constraints on paired packages The trick is that when applying constraints to paired packages, the constraint has to exclude both packages at once. We exclude the pair together or not at all. If it would only exclude one then we discard the constraint. M ./Distribution/Client/Dependency/TopDown/Constraints.hs -2 +9 View patch online: http://darcs.haskell.org/cabal-install/_darcs/patches/20081005051919-adfee-e...