Re: Adding a world file to cabal-install

I've attached a patch to the ticket [1] for world-file support. Every user-requested package is recorded, without implied dependencies. A world file entry consists of the package name, the requested version, and user flags (if any). Recording these flags for each package provides functionality similar to the USE flags in Gentoo. On compiler upgrade these packages can be reinstalled by: # cabal install world It is also possible to upgrade all packages in the world file. This might come in handy as an alternative to the currently disabled global-upgrade: # cabal upgrade world Peter [1] http://hackage.haskell.org/trac/hackage/ticket/199