patch applied (cabal-install): Workaround for 'cabal install world' problem with empty world file

Sun May 9 20:30:51 PDT 2010 Duncan Coutts * Workaround for 'cabal install world' problem with empty world file The current dep resolver does not like an empty set of targets along with a non-empty set of constraints. M ./Distribution/Client/Dependency.hs -1 +6 View patch online: http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal-install;a=darcs_commit...