Resolving dependencies... cabal: Could not resolve dependencies: next goal: pontarius-xmpp (user goal) rejecting: pontarius-xmpp-0.4.5, 0.4.4, 0.4.3, 0.4.2.2, 0.4.2.1, 0.4.2.0, 0.4.1.0, 0.4.0.2, 0.4.0.1, 0.4.0.0, 0.3.0.3, 0.3.0.2, 0.3.0.1, 0.3.0.0, 0.2.0.1, 0.2.0.0, 0.1.0.2 (global constraint requires ==0.1.0.1) trying: pontarius-xmpp-0.1.0.1 trying: base-4.8.1.0/installed-4f7... (dependency of pontarius-xmpp-0.1.0.1) trying: tls-extra-0.6.6 (dependency of pontarius-xmpp-0.1.0.1) next goal: certificate (dependency of tls-extra-0.6.6) rejecting: certificate-1.3.9, 1.3.8, 1.3.7, 1.3.6, 1.3.5 (conflict: base==4.8.1.0/installed-4f7..., certificate => base>=3 && <4.8) rejecting: certificate-1.3.3, 1.3.2, 1.3.1, 1.3.0, 1.2.9, 1.2.8, 1.2.7, 1.2.6, 1.2.5, 1.2.4, 1.2.3, 1.2.2, 1.2.1, 1.2.0, 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: tls-extra => certificate>=1.3.5 && <1.4.0) Dependency tree exhaustively searched.