Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: http-streams (user goal)
rejecting: http-streams-0.8.4.0, http-streams-0.8.3.3, http-streams-0.8.3.2,
http-streams-0.8.3.1, http-streams-0.7.2.6, http-streams-0.7.2.5,
http-streams-0.7.2.4, http-streams-0.7.2.3, http-streams-0.7.2.2,
http-streams-0.7.2.0, http-streams-0.7.1.2, http-streams-0.7.1.1,
http-streams-0.7.0.2 (constraint from user target requires ==0.7.0.1)
trying: http-streams-0.7.0.1
next goal: base (dependency of http-streams-0.7.0.1)
rejecting: base-4.9.0.0/installed-4.9... (conflict: http-streams => base<0)
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.