Resolving dependencies... cabal: Could not resolve dependencies: trying: distributed-process-registry-0.1.0 (user goal) next goal: distributed-process-client-server (dependency of distributed-process-registry-0.1.0) rejecting: distributed-process-client-server-0.1.1 (conflict: distributed-process-registry => distributed-process-client-server>=0.1.2 && <0.2) Dependency tree exhaustively searched.