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, 0.2, 0.1.3 (global constraint requires ==0.1.2) trying: yesod-fb-0.1.2 trying: conduit-1.2.5.1 (dependency of yesod-fb-0.1.2) trying: lifted-base-0.2.3.6 (dependency of conduit-1.2.5.1) next goal: fb (dependency of yesod-fb-0.1.2) rejecting: fb-1.0.12, 1.0.11, 1.0.10, 1.0.9, 1.0.8, 1.0.7, 1.0.6, 1.0.5, 1.0.4, 1.0.3, 1.0.2, 1.0.1, 1.0, 0.15.2, 0.15.1.1, 0.15.1, 0.15.0, 0.14.11, 0.14.10, 0.14.9, 0.14.8, 0.14.7.1, 0.14.7, 0.14.6, 0.14.5, 0.14.4.1, 0.14.4, 0.14.3, 0.14.2, 0.14.1, 0.14, 0.13.4.2, 0.13.4.1, 0.13.4, 0.13.3, 0.13.2, 0.13.1, 0.13 (conflict: yesod-fb => fb>=0.11.1 && <0.13) rejecting: fb-0.12.9, 0.12.8, 0.12.7, 0.12.6, 0.12.5, 0.12.4.1, 0.12.3.4, 0.12.3, 0.12.2, 0.12, 0.11.2.1, 0.11.2, 0.11.1 (conflict: lifted-base==0.2.3.6, fb => lifted-base>=0.1 && <0.2) rejecting: fb-0.11, 0.9.7, 0.9.6, 0.9.5.1, 0.9.5, 0.9.4, 0.9.3, 0.9.1, 0.9, 0.8, 0.7.5, 0.7.4.1, 0.7.4, 0.7.3, 0.7.2, 0.7.1, 0.7, 0.6.0.2, 0.6.0.1, 0.6, 0.5, 0.4.0.2, 0.4.0.1, 0.4, 0.3.1, 0.3, 0.2.1, 0.2, 0.1 (conflict: yesod-fb => fb>=0.11.1 && <0.13) Backjump limit reached (change with --max-backjumps).