Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: cqrs-example (user goal)
rejecting: cqrs-example-0.9.1, 0.9.0, 0.8.0, 0.7.1, 0.7.0, 0.6.0 (global
constraint requires ==0.5.0.1)
trying: cqrs-example-0.5.0.1
trying: base-4.7.0.1/installed-e4b... (dependency of cqrs-example-0.5.0.1)
next goal: cereal (dependency of cqrs-example-0.5.0.1)
rejecting: cereal-0.4.1.1, 0.4.1.0, 0.4.0.1, 0.4.0.0 (conflict: cqrs-example
=> cereal>=0.3 && <0.4)
trying: cereal-0.3.5.2
rejecting: cereal-0.3.5.2:+split-base (conflict:
base==4.7.0.1/installed-e4b..., cereal-0.3.5.2:split-base => base>=4 && <4.7)
rejecting: cereal-0.3.5.2:-split-base (conflict:
base==4.7.0.1/installed-e4b..., cereal-0.3.5.2:split-base => base<3.0)
Dependency tree exhaustively searched.