Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: fountain (user goal)
rejecting: fountain-0.1, fountain-0.0.6, fountain-0.0.5, fountain-0.0.4,
fountain-0.0.2 (constraint from user target requires ==0.0.1)
trying: fountain-0.0.1
trying: base-4.9.0.0/installed-4.9... (dependency of fountain-0.0.1)
next goal: containers (dependency of fountain-0.0.1)
rejecting: containers-0.5.7.1/installed-0.5..., containers-0.5.9.1,
containers-0.5.8.1, containers-0.5.7.1, containers-0.5.7.0,
containers-0.5.6.3, containers-0.5.6.2, containers-0.5.6.1,
containers-0.5.6.0, containers-0.5.5.1, containers-0.5.5.0,
containers-0.5.4.0, containers-0.5.3.1, containers-0.5.3.0,
containers-0.5.2.1, containers-0.5.2.0, containers-0.5.1.0,
containers-0.5.0.0, containers-0.4.2.1, containers-0.4.2.0,
containers-0.4.1.0, containers-0.4.0.0 (conflict: fountain => containers>=0.3
&& <0.4)
rejecting: containers-0.3.0.0 (conflict: base==4.9.0.0/installed-4.9...,
containers => base>=4.2 && <4.7)
rejecting: containers-0.2.0.1, containers-0.2.0.0, containers-0.1.0.1,
containers-0.1.0.0 (conflict: fountain => containers>=0.3 && <0.4)
Dependency tree exhaustively searched.