[Haskell-cafe] building documentation

I'm on ubuntu, ghc 6.8.3. I built this using the Generic i386 Linux build at http://www.haskell.org/ghc/download_ghc_683.html How do I build local documentation that matches what I see at http://www.haskell.org/ghc/docs/latest/html/libraries/ -- and am I correct that this is 6.8.3 right now? When I go to file:///usr/share/doc/ghc6-doc/libraries/index.html to browse local docu, I am missing for example Control.Monad.Error.