Resolving dependencies... cabal: Could not resolve dependencies: next goal: keter (user goal) rejecting: keter-1.4.3.1, 1.4.3, 1.4.2.1, 1.4.1, 1.4.0.1, 1.4.0, 1.3.10.1, 1.3.10, 1.3.9.2, 1.3.9.1, 1.3.9, 1.3.8, 1.3.7.1, 1.3.7, 1.3.6, 1.3.5.3, 1.3.5.2, 1.3.5.1, 1.3.5, 1.3.4, 1.3.3, 1.3.2, 1.3.1, 1.3.0, 1.2.1, 1.2.0, 1.1.0.1, 1.1.0, 1.0.1.2, 1.0.1.1, 1.0.1, 0.4.0, 0.3.6.1, 0.3.6, 0.3.5.4, 0.3.5.3, 0.3.5.2, 0.3.5.1, 0.3.5, 0.3.4.2, 0.3.4.1, 0.3.4, 0.3.3, 0.3.2, 0.3.1, 0.3.0.1, 0.3.0, 0.2.0.3 (global constraint requires ==0.2.0.2) trying: keter-0.2.0.2 trying: base-4.8.1.0/installed-4f7... (dependency of keter-0.2.0.2) next goal: tls-extra (dependency of keter-0.2.0.2) rejecting: tls-extra-0.6.6, 0.6.5, 0.6.4, 0.6.3, 0.6.1, 0.6.0, 0.5.1, 0.5.0 (conflict: keter => tls-extra>=0.4 && <0.5) trying: tls-extra-0.4.7.1 next goal: cryptocipher (dependency of tls-extra-0.4.7.1) rejecting: cryptocipher-0.6.2, 0.6.1, 0.6.0, 0.5.2, 0.5.1, 0.5.0, 0.4.0 (conflict: tls-extra => cryptocipher>=0.3.0 && <0.4.0) trying: cryptocipher-0.3.7 next goal: crypto-pubkey-types (dependency of cryptocipher-0.3.7) rejecting: crypto-pubkey-types-0.4.3, 0.4.2.3, 0.4.2.2, 0.4.2.1, 0.4.2, 0.4.1, 0.4.0, 0.3.2, 0.3.1, 0.3.0 (conflict: cryptocipher => crypto-pubkey-types>=0.2 && <0.3) trying: crypto-pubkey-types-0.2.0 next goal: certificate (dependency of keter-0.2.0.2) rejecting: certificate-1.3.9, 1.3.8, 1.3.7, 1.3.6, 1.3.5, 1.3.3, 1.3.2, 1.3.1, 1.3.0 (conflict: keter => certificate>=1.2 && <1.3) rejecting: certificate-1.2.9, 1.2.8, 1.2.7 (conflict: base==4.8.1.0/installed-4f7..., certificate => base>=3 && <4.8) rejecting: certificate-1.2.6 (conflict: crypto-pubkey-types==0.2.0, certificate => crypto-pubkey-types>=0.1 && <0.2) rejecting: certificate-1.2.5, 1.2.4, 1.2.3, 1.2.2, 1.2.1, 1.2.0 (conflict: base==4.8.1.0/installed-4f7..., certificate => base>=3 && <4.8) rejecting: certificate-1.1.1, 1.1.0, 1.0.1, 1.0.0, 0.9.5, 0.9.4, 0.9.3, 0.9.2, 0.9.1, 0.9.0.1, 0.9.0, 0.8.1, 0.8.0, 0.7.0, 0.6.0, 0.4.0, 0.3.2, 0.3, 0.2.1, 0.2, 0.1 (conflict: keter => certificate>=1.2 && <1.3) Dependency tree exhaustively searched.