Resolving dependencies... cabal: Could not resolve dependencies: next goal: tls-debug (user goal) rejecting: tls-debug-0.4.4, tls-debug-0.4.3, tls-debug-0.4.2, tls-debug-0.4.1, tls-debug-0.4.0, tls-debug-0.3.4, tls-debug-0.3.3, tls-debug-0.3.2, tls-debug-0.3.1, tls-debug-0.3.0, tls-debug-0.2.5, tls-debug-0.2.3 (constraint from user target requires ==0.2.2) trying: tls-debug-0.2.2 trying: base-4.9.0.0/installed-4.9... (dependency of tls-debug-0.2.2) trying: tls-extra-0.6.6 (dependency of tls-debug-0.2.2) next goal: certificate (dependency of tls-debug-0.2.2) rejecting: certificate-1.3.9, certificate-1.3.8, certificate-1.3.7, certificate-1.3.6, certificate-1.3.5 (conflict: base==4.9.0.0/installed-4.9..., certificate => base>=3 && <4.8) rejecting: certificate-1.3.3, certificate-1.3.2, certificate-1.3.1, certificate-1.3.0, certificate-1.2.9, certificate-1.2.8, certificate-1.2.7, certificate-1.2.6, certificate-1.2.5, certificate-1.2.4, certificate-1.2.3, certificate-1.2.2, certificate-1.2.1, certificate-1.2.0, certificate-1.1.1, certificate-1.1.0, certificate-1.0.1, certificate-1.0.0 (conflict: tls-extra => certificate>=1.3.5 && <1.4.0) rejecting: certificate-0.9.5, certificate-0.9.4, certificate-0.9.3, certificate-0.9.2, certificate-0.9.1, certificate-0.9.0.1, certificate-0.9.0, certificate-0.8.1, certificate-0.8.0, certificate-0.7.0, certificate-0.6.0, certificate-0.4.0, certificate-0.3.2, certificate-0.3, certificate-0.2.1, certificate-0.2, certificate-0.1 (conflict: tls-debug => certificate>=1.0) Dependency tree exhaustively searched.