I've just uploaded the Cabal-1.22.0.0 RC:

http://johantibell.com/files/Cabal-1.22.0.0-rc.tar.gz

I know it's a bit late, but if you could update the GHC 7.10 branch to use it (Git tag: Cabal-v1.22.0.0-rc) that would be great.

When do you need the actual release to happen, so it's out before GHC 7.10?

-- Johan