GHC in the ports tree has been updated to version 7.0.4 and the port revision
for all the Haskell ports without version changes are bumped. Other per-port
updates are coming soon.
This update also incorporates some improvements for bsd.cabal.mk that makes
working with Haskell ports even easier.
Thanks ashish@ for the help!
Obtained from: FreeBSD Haskell
ports which makes possible the direct translation of Cabal package
descriptions to FreeBSD ports. It promises both easier addition and
maintenance for Cabal-based ports.