I try to install git-annex master with cabal, so I cloned the git repo and run "cabal install --only-dependencies". This gives me the following error:

Resolving dependencies...
cabal: Could not resolve dependencies:
trying: git-annex-3.20120826 (user goal)
trying: git-annex-3.20120826:+oldyesod
trying: git-annex-3.20120826:+currentyesod
next goal: yesod-default (dependency of git-annex-3.20120826:+oldyesod)
rejecting: yesod-default-1.1.0 (conflict: git-annex-3.20120826:oldyesod =>
rejecting: yesod-default-, 1.0.1, 1.0.0, 0.6.1, 0.5.0, 0.4.1, 0.4.0,
0.3.1 (conflict: git-annex-3.20120826:currentyesod => yesod-default(>=1.1.0))

Any idea how to fix this? (PS: I'm running Kubuntu 12.04)

Cheers, Tobias