Resolving dependencies... cabal: Could not resolve dependencies: next goal: yesod-auth-oauth2 (user goal) rejecting: yesod-auth-oauth2-0.2.2, yesod-auth-oauth2-0.2.1, yesod-auth-oauth2-0.2.0, yesod-auth-oauth2-0.1.10, yesod-auth-oauth2-0.1.9, yesod-auth-oauth2-0.1.8, yesod-auth-oauth2-0.1.7, yesod-auth-oauth2-0.1.6, yesod-auth-oauth2-0.1.5, yesod-auth-oauth2-0.1.4, yesod-auth-oauth2-0.1.3, yesod-auth-oauth2-0.1.2, yesod-auth-oauth2-0.1.1, yesod-auth-oauth2-0.1.0, yesod-auth-oauth2-0.0.12, yesod-auth-oauth2-0.0.11, yesod-auth-oauth2-0.0.10, yesod-auth-oauth2-0.0.9, yesod-auth-oauth2-0.0.8, yesod-auth-oauth2-0.0.7, yesod-auth-oauth2-0.0.6, yesod-auth-oauth2-0.0.5.1, yesod-auth-oauth2-0.0.5 (constraint from user target requires ==0.0.4) trying: yesod-auth-oauth2-0.0.4 trying: monad-control-1.0.1.0 (dependency of lifted-base-0.2.3.8) next goal: hoauth2 (dependency of yesod-auth-oauth2-0.0.4) rejecting: hoauth2-0.5.7, hoauth2-0.5.6.0, hoauth2-0.5.5.0, hoauth2-0.5.4.0, hoauth2-0.5.3.1, hoauth2-0.5.3, hoauth2-0.5.2, hoauth2-0.5.1, hoauth2-0.5.0.1, hoauth2-0.5.0, hoauth2-0.4.8, hoauth2-0.4.7, hoauth2-0.4.6, hoauth2-0.4.5, hoauth2-0.4.4, hoauth2-0.4.3, hoauth2-0.4.2, hoauth2-0.4.1, hoauth2-0.4.0 (conflict: yesod-auth-oauth2 => hoauth2>=0.3.6 && <0.4) rejecting: hoauth2-0.3.7, hoauth2-0.3.6.1, hoauth2-0.3.6 (conflict: monad-control==1.0.1.0, hoauth2 => monad-control>=0.3 && <0.4) rejecting: hoauth2-0.3.5, hoauth2-0.3.0, hoauth2-0.2.6, hoauth2-0.2.5.1, hoauth2-0.2.5, hoauth2-0.2.4, hoauth2-0.2.3, hoauth2-0.2.2, hoauth2-0.2.0, hoauth2-0.1.2, hoauth2-0.1 (conflict: yesod-auth-oauth2 => hoauth2>=0.3.6 && <0.4) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).