Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: shakespeare (user goal)
rejecting: shakespeare-2.0.11.2, shakespeare-2.0.11.1, shakespeare-2.0.11,
shakespeare-2.0.10, shakespeare-2.0.9, shakespeare-2.0.8.2,
shakespeare-2.0.8.1, shakespeare-2.0.8, shakespeare-2.0.7, shakespeare-2.0.6,
shakespeare-2.0.5, shakespeare-2.0.4.1, shakespeare-2.0.4, shakespeare-2.0.3,
shakespeare-2.0.2.2, shakespeare-2.0.2.1 (constraint from user target requires
==2.0.2)
trying: shakespeare-2.0.2
next goal: base (dependency of shakespeare-2.0.2)
rejecting: base-4.9.0.0/installed-4.9... (conflict: shakespeare => base>=4 &&
<4.8)
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.