Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: yesod-fb (user goal)
rejecting: yesod-fb-0.3.4, 0.3.3, 0.3.2, 0.3.1, 0.3, 0.2.3, 0.2.2, 0.2.1
(global constraint requires ==0.2)
trying: yesod-fb-0.2
trying: aeson-0.9.0.1 (dependency of yesod-fb-0.2)
trying: transformers-0.3.0.0/installed-16a... (dependency of aeson-0.9.0.1)
trying: conduit-1.2.4.2 (dependency of yesod-fb-0.2)
trying: transformers-base-0.4.4 (dependency of conduit-1.2.4.2)
trying: transformers-compat-0.4.0.4 (dependency of transformers-base-0.4.4)
trying: transformers-compat-0.4.0.4:-two
rejecting: transformers-compat-0.4.0.4:-three (conflict:
transformers==0.3.0.0/installed-16a..., transformers-compat-0.4.0.4:three =>
transformers>=0.4.1 && <0.5)
rejecting: transformers-compat-0.4.0.4:+three (manual flag can only be changed
explicitly)
Backjump limit reached (change with --max-backjumps).