Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: streams (user goal)
rejecting: streams-3.2.1, 3.2, 3.1.1, 3.1, 3.0.1.1, 3.0.1, 3.0.0.1, 3.0,
0.8.2, 0.8.1, 0.8.0.4, 0.8.0.3, 0.8.0.2, 0.8.0.1, 0.8.0, 0.7.2, 0.7.1, 0.7.0,
0.6.3, 0.6.1.2, 0.6.1.1, 0.6.0.1, 0.6.0, 0.5.1.2, 0.5.1.1, 0.5.1, 0.5.0, 0.4,
0.3.1 (global constraint requires ==0.3)
trying: streams-0.3
next goal: base (dependency of streams-0.3)
rejecting: base-4.8.1.0/installed-4f7... (conflict: streams => base>=4 &&
<4.4)
rejecting: base-4.8.1.0, 4.8.0.0, 4.7.0.2, 4.7.0.1, 4.7.0.0, 4.6.0.1, 4.6.0.0,
4.5.1.0, 4.5.0.0, 4.4.1.0, 4.4.0.0, 4.3.1.0, 4.3.0.0, 4.2.0.2, 4.2.0.1,
4.2.0.0, 4.1.0.0, 4.0.0.0, 3.0.3.2, 3.0.3.1 (global constraint requires
installed instance)
Dependency tree exhaustively searched.