The Haskell libraries are gradually moving towards being buildable using Cabal, rather than by GHC's make system. This is good. But here are two bug reports telling what doesn't work: http://hackage.haskell.org/trac/ghc/ticket/893 http://hackage.haskell.org/trac/ghc/ticket/894 (missing Setup.hs, and/or Haddock parsing errors). Ross has fixed some of these (thanks!). This message is to invite package maintainers to work on fix the remaining glitches. (We won't undertake to fix this for GHC 6.6, because these packages can be upgraded separately.) The relevant packages are: Haddock errors: http://hackage.haskell.org/trac/ghc/ticket/894 network xhtml opengl openal alut Missing Setup http://hackage.haskell.org/trac/ghc/ticket/893 arrows fgl haskell-src html hunit mtl quickcheck time Thanks! Simon