I just retired [1] ghc-gtk2hs/devel since upstream is moving to modular packages and the current package does not build with ghc-6.12.2 (yes devel (F14) is otherwise already updated to ghc-6.12.2 now:).
Waiting for the new packages to be released though we could even start packaging darcs snapshots if it does not happen quickly.
There will be a number of packages: "gtk2hsBuildTools, glib, cairo, pango, gtk, webkit, ..."
Jens
[1] http://fedoraproject.org/wiki/PackageMaintainers/PackageEndOfLife
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