Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: cassandra-thrift (user goal)
rejecting: cassandra-thrift-0.8.5.1, cassandra-thrift-0.8.5,
cassandra-thrift-0.8.0, cassandra-thrift-0.7.4, cassandra-thrift-0.7.2.1
(constraint from user target requires ==0.7.2)
trying: cassandra-thrift-0.7.2
next goal: base (dependency of cassandra-thrift-0.7.2)
rejecting: base-4.9.0.0/installed-4.9... (conflict: cassandra-thrift =>
base>=4.2.0.0 && <4.9)
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.