[Haskell-cafe] Re: How does cabal determine version ranges in the dependencies?

I recently started porting cabal-install to Freebsd. When I looked at its dependencies on hackage, I noticed HTTP (>=4000.0.2 && <4001). However the latest HTTP version on hackage is 4000.0.8. That struck me as kinda odd. How can cabal tell that it won't be compatible with HTTP version 4001?

If it doesn't break dependencies, it won't be called http 4001, it will be called 4000.0.9 :) Check: http://www.haskell.org/haskellwiki/Package_versioning_policy Best, Maurício