Resolving dependencies... cabal: Could not resolve dependencies: next goal: keystore (user goal) rejecting: keystore-0.8.0.0, 0.7.0.1, 0.7.0.0, 0.6.3.1, 0.6.3.0, 0.6.2.0, 0.6.1.1, 0.6.1.0, 0.6.0.0, 0.5.1.1, 0.5.1.0, 0.5.0.4, 0.5.0.3, 0.5.0.2, 0.5.0.1, 0.4.0.0, 0.3.0.1, 0.3.0.0, 0.2.0.1, 0.2.0.0 (global constraint requires ==0.1.1.0) trying: keystore-0.1.1.0 trying: vector-0.11.0.0 (dependency of keystore-0.1.1.0) trying: primitive-0.6.1.0 (dependency of vector-0.11.0.0) trying: transformers-0.4.2.0/installed-21d... (dependency of primitive-0.6.1.0) next goal: optparse-applicative (dependency of keystore-0.1.1.0) rejecting: optparse-applicative-0.12.0.0, 0.11.0.2, 0.11.0.1, 0.11.0, 0.10.0, 0.9.1.1, 0.9.1, 0.9.0, 0.8.1, 0.8.0.1, 0.8.0 (conflict: keystore => optparse-applicative>=0.7.0.2 && <0.8) rejecting: optparse-applicative-0.7.0.2 (conflict: transformers==0.4.2.0/installed-21d..., optparse-applicative => transformers>=0.2 && <0.4) rejecting: optparse-applicative-0.7.0.1, 0.7.0, 0.6.0, 0.5.2.1, 0.5.2, 0.5.1, 0.5.0, 0.4.3, 0.4.2, 0.4.1, 0.4.0, 0.3.2, 0.3.1, 0.3.0, 0.2.0, 0.1.1, 0.1.0, 0.0.1 (conflict: keystore => optparse-applicative>=0.7.0.2 && <0.8) Backjump limit reached (change with --max-backjumps).