Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] trying: distributed-process-client-server-0.2.6.0 (user goal)
[__1] trying: unordered-containers-0.2.20 (dependency of
distributed-process-client-server)
[__2] trying: hashable-1.5.0.0 (dependency of
distributed-process-client-server)
[__3] next goal: distributed-process-extras (dependency of
distributed-process-client-server)
[__3] rejecting: distributed-process-extras-0.3.5 (conflict:
hashable==1.5.0.0, distributed-process-extras => hashable>=1.2.0.5 && <1.3)
[__3] skipping: distributed-process-extras-0.3.2,
distributed-process-extras-0.3.1, distributed-process-extras-0.3.0,
distributed-process-extras-0.2.1.2, distributed-process-extras-0.2.1.1,
distributed-process-extras-0.2.0, distributed-process-extras-0.1.1,
distributed-process-extras-0.1.0 (has the same characteristics that caused the
previous version to fail: excludes 'hashable' version 1.5.0.0)
[__3] fail (backjumping, conflict set: distributed-process-client-server,
distributed-process-extras, hashable)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hashable, base, unordered-containers,
distributed-process-extras, distributed-process-client-server
Try running with --minimize-conflict-set to improve the error message.