[Haskell-beginners] Cabal update possible?

Have: * The Glorious Glasgow Haskell Compilation System, version 7.6.3 * cabal-install version 1.16.0.2 using version 1.16.0 of the Cabal library Can I update to Cabal 1.18 so I can use sandboxes without breaking my dependencies? I think that that is what broke my Haskell toolchain 2h ago. Now I redid it so everything's fine, but I'd like to use sandboxes. If impossible, hsenv has worked for me in the past, but... I did not want to use Haskell Platform, since it pulls in several OpenGL libs completely unnecessary *for* and potentially detrimental *to* my server. "Haskell Platform, Server Edition", anyone? fredrik