Resolving dependencies... cabal: Could not resolve dependencies: trying: base-4.9.0.0/installed-4.9... (dependency of yesod-auth-0.3.0.1) next goal: persistent (dependency of yesod-auth-0.3.0.1) rejecting: persistent-2.6, persistent-2.5, persistent-2.2.4.1, persistent-2.2.4, persistent-2.2.3, persistent-2.2.2.1, persistent-2.2.2, persistent-2.2.1, persistent-2.2, persistent-2.1.6, persistent-2.1.5, persistent-2.1.4, persistent-2.1.3, persistent-2.1.2, persistent-2.1.1.7, persistent-2.1.1.6, persistent-2.1.1.5, persistent-2.1.1.4, persistent-2.1.1.3, persistent-2.1.1.2, persistent-2.1.1.1, persistent-2.1.1, persistent-2.1.0.2, persistent-2.1.0.1, persistent-2.1, persistent-1.3.3, persistent-1.3.2, persistent-1.3.1.1, persistent-1.3.1, persistent-1.3.0.6, persistent-1.3.0.5, persistent-1.3.0.4, persistent-1.3.0.3, persistent-1.3.0.2, persistent-1.3.0, persistent-1.2.3.3, persistent-1.2.3.2, persistent-1.2.3.0, persistent-1.2.2.0, persistent-1.2.1.2, persistent-1.2.1.1, persistent-1.2.1, persistent-1.2.0.2, persistent-1.2.0.1, persistent-1.2.0, persistent-1.1.5.1, persistent-1.1.5, persistent-1.1.4, persistent-1.1.3.2, persistent-1.1.3.1, persistent-1.1.3, persistent-1.1.2, persistent-1.1.0.1, persistent-1.1.0, persistent-1.0.2.2, persistent-1.0.2.1, persistent-1.0.2, persistent-1.0.1.3, persistent-1.0.1.2, persistent-1.0.1.1, persistent-1.0.1, persistent-1.0.0, persistent-0.9.0.4, persistent-0.9.0.3, persistent-0.9.0.2, persistent-0.9.0.1, persistent-0.9.0, persistent-0.8.0.2, persistent-0.8.0.1, persistent-0.8.0, persistent-0.7.0.1, persistent-0.7.0, persistent-0.6.4.4, persistent-0.6.4.3, persistent-0.6.4.2, persistent-0.6.4.1, persistent-0.6.4, persistent-0.6.3, persistent-0.6.2, persistent-0.6.1, persistent-0.5.1, persistent-0.5.0 (conflict: yesod-auth => persistent>=0.4 && <0.5) trying: persistent-0.4.2 next goal: monad-peel (dependency of persistent-0.4.2) rejecting: monad-peel-0.2.1.1, monad-peel-0.2.1, monad-peel-0.2 (conflict: persistent => monad-peel>=0.1 && <0.2) rejecting: monad-peel-0.1.1, monad-peel-0.1 (conflict: base==4.9.0.0/installed-4.9..., monad-peel => base>=3 && <4.7) Dependency tree exhaustively searched.