Resolving dependencies... cabal: Could not resolve dependencies: [__0] trying: project-m36-0.4 (user goal) [__1] trying: ghc-8.2.2/installed-8.2... (dependency of project-m36) [__2] next goal: distributed-process-client-server (dependency of project-m36) [__2] rejecting: distributed-process-client-server-0.2.3 (conflict: ghc => time==1.8.0.2/installed-1.8..., distributed-process-client-server => time>1.4 && <1.8) [__2] rejecting: distributed-process-client-server-0.2.2, distributed-process-client-server-0.2.1, distributed-process-client-server-0.2.0, distributed-process-client-server-0.1.3.2, distributed-process-client-server-0.1.3.1, distributed-process-client-server-0.1.2, distributed-process-client-server-0.1.1 (conflict: project-m36 => distributed-process-client-server>=0.2.3) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: project-m36, ghc, distributed-process-client-server, base, ghc:buildable