Resolving dependencies... cabal: Could not resolve dependencies: trying: pocket-dns-0.1.1 (user goal) trying: http-conduit-2.1.8 (dependency of pocket-dns-0.1.1) trying: http-client-tls-0.2.2 (dependency of http-conduit-2.1.8) trying: connection-0.2.5 (dependency of http-client-tls-0.2.2) trying: x509-system-1.6.1 (dependency of connection-0.2.5) trying: process-1.2.3.0/installed-f02... (dependency of x509-system-1.6.1) trying: unix-2.7.1.0/installed-643... (dependency of process-1.2.3.0/installed-f02...) next goal: persistent-zookeeper (dependency of pocket-dns-0.1.1) rejecting: persistent-zookeeper-0.2.0 (conflict: unix => time==1.5.0.1/installed-c20..., persistent-zookeeper => time>=1.4 && <1.5) rejecting: persistent-zookeeper-0.1.0, 0.0.3, 0.0.2, 0.0.1 (conflict: pocket-dns => persistent-zookeeper>=0.2 && <0.3) Backjump limit reached (change with --max-backjumps).