From Fedora Project Wiki
This is a reference for ghc package interdependencies.
The graphs are generated with the script pkg-deps.sh.
ghc-pkg-6.10.4 does not have a dot command so no graph for F12.
F13
ghc-6.12.1 and haskell-platform-2010.1.0.0
F14
ghc-6.12.3 and haskell-platform-2010.2.0.0
F15
Currently ghc-7.0.1 and haskell-platform-2011.1.0.0 alpha
EPEL6
ghc-6.12.3 and haskell-platform-2010.2.0.0