patch applied (cabal): Simplify getInstalledPackages and callers

Wed Dec 23 15:48:57 PST 2009 Duncan Coutts * Simplify getInstalledPackages and callers Ignore-this: 7927e992e0b040347dc24530219eb8eb No longer returns Maybe, we can find installed packages for all the compilers we support (and this feature is a requirement for support for new compilers). This is an API change so cannot merge to Cabal-1.8.x branch. M ./Distribution/Simple/Configure.hs -42 +17 View patch online: http://darcs.haskell.org/cabal/_darcs/patches/20091223234857-adfee-fea716526...