Resolving dependencies... cabal: Could not resolve dependencies: next goal: yesod-auth (user goal) rejecting: yesod-auth-1.4.15, yesod-auth-1.4.14, yesod-auth-1.4.13.5, yesod-auth-1.4.13.4, yesod-auth-1.4.13.3, yesod-auth-1.4.13.2, yesod-auth-1.4.13.1, yesod-auth-1.4.13, yesod-auth-1.4.12, yesod-auth-1.4.11, yesod-auth-1.4.8, yesod-auth-1.4.7, yesod-auth-1.4.6.1, yesod-auth-1.4.6, yesod-auth-1.4.5.1, yesod-auth-1.4.5, yesod-auth-1.4.4, yesod-auth-1.4.3.1, yesod-auth-1.4.3, yesod-auth-1.4.2, yesod-auth-1.4.1.3, yesod-auth-1.4.1.2, yesod-auth-1.4.1.1, yesod-auth-1.4.1, yesod-auth-1.4.0.2, yesod-auth-1.4.0.1, yesod-auth-1.4.0, yesod-auth-1.3.4.6, yesod-auth-1.3.4.5, yesod-auth-1.3.4.4, yesod-auth-1.3.4.3, yesod-auth-1.3.4.2, yesod-auth-1.3.4.1, yesod-auth-1.3.4, yesod-auth-1.3.3, yesod-auth-1.3.2, yesod-auth-1.3.1.1, yesod-auth-1.3.1, yesod-auth-1.3.0.5, yesod-auth-1.3.0.4, yesod-auth-1.3.0.2, yesod-auth-1.3.0.1, yesod-auth-1.3.0.0, yesod-auth-1.2.7.1, yesod-auth-1.2.7, yesod-auth-1.2.6, yesod-auth-1.2.5.3, yesod-auth-1.2.5.2, yesod-auth-1.2.5.1, yesod-auth-1.2.5.0, yesod-auth-1.2.4.1, yesod-auth-1.2.4, yesod-auth-1.2.3, yesod-auth-1.2.2.1, yesod-auth-1.2.2, yesod-auth-1.2.1, yesod-auth-1.2.0.2, yesod-auth-1.2.0.1, yesod-auth-1.2.0, yesod-auth-1.1.7, yesod-auth-1.1.6, yesod-auth-1.1.5.3, yesod-auth-1.1.5.2, yesod-auth-1.1.5.1, yesod-auth-1.1.5, yesod-auth-1.1.4.1 (constraint from user target requires ==1.1.4) trying: yesod-auth-1.1.4 trying: base-4.9.0.0/installed-4.9... (dependency of yesod-auth-1.1.4) next goal: blaze-markup (dependency of yesod-auth-1.1.4) rejecting: blaze-markup-0.7.1.1, blaze-markup-0.7.1.0, blaze-markup-0.7.0.3, blaze-markup-0.7.0.2, blaze-markup-0.7.0.1, blaze-markup-0.7.0.0, blaze-markup-0.6.3.0, blaze-markup-0.6.2.0, blaze-markup-0.6.1.1, blaze-markup-0.6.1.0, blaze-markup-0.6.0.0 (conflict: yesod-auth => blaze-markup>=0.5.1 && <0.6) rejecting: blaze-markup-0.5.2.1, blaze-markup-0.5.2.0, blaze-markup-0.5.1.7, blaze-markup-0.5.1.6, blaze-markup-0.5.1.5, blaze-markup-0.5.1.4, blaze-markup-0.5.1.3, blaze-markup-0.5.1.2, blaze-markup-0.5.1.1, blaze-markup-0.5.1.0 (conflict: base==4.9.0.0/installed-4.9..., blaze-markup => base>=4 && <4.8) rejecting: blaze-markup-0.5.0.0 (conflict: yesod-auth => blaze-markup>=0.5.1 && <0.6) Dependency tree exhaustively searched.