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

Hi everyone 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? regards david -- Preisknaller: GMX DSL Flatrate für nur 16,99 Euro/mtl.! http://portal.gmx.net/de/go/dsl02