Resolving dependencies... cabal: Could not resolve dependencies: next goal: yackage (user goal) rejecting: yackage-0.7.0.8, 0.7.0.7, 0.7.0.6, 0.7.0.5, 0.7.0.4, 0.7.0.3, 0.7.0.2, 0.7.0.1, 0.7.0, 0.6.0.5, 0.6.0.4 (global constraint requires ==0.6.0.3) trying: yackage-0.6.0.3 trying: conduit-1.2.4.2 (dependency of yackage-0.6.0.3) trying: lifted-base-0.2.3.6 (dependency of conduit-1.2.4.2) trying: monad-control-1.0.0.4 (dependency of lifted-base-0.2.3.6) trying: resourcet-1.1.5 (dependency of conduit-1.2.4.2) next goal: yesod-form (dependency of yackage-0.6.0.3) rejecting: yesod-form-1.4.4.1, 1.4.4, 1.4.3.1, 1.4.3, 1.4.2.1, 1.4.2, 1.4.1.1, 1.4.1, 1.4.0.2, 1.4.0.1, 1.4.0, 1.3.16, 1.3.15.4, 1.3.15.3, 1.3.15.2, 1.3.15.1, 1.3.15, 1.3.14, 1.3.13, 1.3.12, 1.3.11, 1.3.10, 1.3.9.1, 1.3.9, 1.3.8.3, 1.3.8.2, 1.3.8.1, 1.3.8, 1.3.7, 1.3.6, 1.3.5.2, 1.3.5.1, 1.3.5, 1.3.4.4, 1.3.4.3, 1.3.4.2, 1.3.4.1, 1.3.4, 1.3.3, 1.3.2.2, 1.3.2.1, 1.3.2, 1.3.1, 1.3.0.1, 1.3.0 (conflict: yackage => yesod-form>=1.1 && <1.3) trying: yesod-form-1.2.1.3 next goal: persistent (dependency of yesod-form-1.2.1.3) rejecting: persistent-2.1.6, 2.1.5, 2.1.4, 2.1.3, 2.1.2, 2.1.1.7, 2.1.1.6, 2.1.1.5, 2.1.1.4, 2.1.1.3, 2.1.1.2, 2.1.1.1, 2.1.1, 2.1.0.2, 2.1.0.1, 2.1, 2.0.8, 2.0.7.1, 2.0.7, 2.0.5.1, 2.0.5, 2.0.4, 2.0.3.1, 2.0.3, 2.0.2, 2.0.1.1, 2.0.1, 2.0.0.1, 2.0.0, 1.3.3, 1.3.2, 1.3.1.1, 1.3.1, 1.3.0.6, 1.3.0.5, 1.3.0.4, 1.3.0.3, 1.3.0.2, 1.3.0, 1.2.3.3, 1.2.3.2, 1.2.3.1, 1.2.3.0, 1.2.2.0, 1.2.1.2, 1.2.1.1, 1.2.1, 1.2.0.2, 1.2.0.1, 1.2.0 (conflict: yesod-form => persistent>=1.0 && <1.2) trying: persistent-1.1.5.1 next goal: pool-conduit (dependency of persistent-1.1.5.1) rejecting: pool-conduit-0.1.2.3, 0.1.2.2 (conflict: monad-control==1.0.0.4, pool-conduit => monad-control<1) rejecting: pool-conduit-0.1.2.1, 0.1.2, 0.1.1 (conflict: resourcet==1.1.5, pool-conduit => resourcet>=0.3 && <0.5) rejecting: pool-conduit-0.1.0.3, 0.1.0.2, 0.1.0.1, 0.1.0, 0.0.0.1, 0.0.0 (conflict: persistent => pool-conduit>=0.1.1) Backjump limit reached (change with --max-backjumps).