Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: distributed-process-monad-control (user goal)
rejecting: distributed-process-monad-control-0.5.1.2,
distributed-process-monad-control-0.5.1.1,
distributed-process-monad-control-0.5.1,
distributed-process-monad-control-0.5.0 (constraint from user target requires
==0.4.2)
trying: distributed-process-monad-control-0.4.2
next goal: base (dependency of distributed-process-monad-control-0.4.2)
rejecting: base-4.9.0.0/installed-4.9... (conflict:
distributed-process-monad-control => base>=4.4 && <=0.5)
rejecting: base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0,
base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0,
base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0,
base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0,
base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable
package requires installed instance)
Dependency tree exhaustively searched.