Resolving dependencies... cabal: Could not resolve dependencies: next goal: stripe-haskell (user goal) rejecting: stripe-haskell-2.1.0, stripe-haskell-2.0.3 (constraint from user target requires ==2.0.2) trying: stripe-haskell-2.0.2 trying: time-1.6.0.1/installed-1.6... (dependency of io-streams-1.3.5.0) next goal: aeson (dependency of stripe-http-streams-2.0.3) rejecting: aeson-1.0.2.1, aeson-1.0.2.0, aeson-1.0.1.0, aeson-1.0.0.0 (conflict: stripe-http-streams => aeson>=0.8 && <0.10 || ==0.11.*) trying: aeson-0.11.2.1 next goal: stripe-core (dependency of stripe-haskell-2.0.2) rejecting: stripe-core-2.1.0 (conflict: stripe-haskell => stripe-core>=2.0 && <2.1) rejecting: stripe-core-2.0.3 (conflict: time==1.6.0.1/installed-1.6..., stripe-core => time>=1.4 && <1.6) rejecting: stripe-core-2.0.2, stripe-core-2.0.1, stripe-core-2.0.0 (conflict: aeson==0.11.2.1, stripe-core => aeson>=0.8 && <0.10) Dependency tree exhaustively searched.