Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: Spock (user goal)
rejecting: Spock-0.10.0.1, 0.9.0.1, 0.9.0.0, 0.8.1.0, 0.8.0.0, 0.7.12.0,
0.7.11.0, 0.7.10.0, 0.7.9.0, 0.7.8.0, 0.7.7.0, 0.7.6.0, 0.7.5.2, 0.7.5.1,
0.7.5.0, 0.7.4.0, 0.7.2.0, 0.7.1.0, 0.7.0.0, 0.6.6.1, 0.6.6.0, 0.6.5.0,
0.6.4.0, 0.6.3.0, 0.6.2.3, 0.6.2.2, 0.6.2.1, 0.6.2.0, 0.6.1.3, 0.6.1.2,
0.6.1.0, 0.6.0.0, 0.5.1.0, 0.5.0.1 (global constraint requires ==0.5.0.0)
trying: Spock-0.5.0.0
trying: base-4.8.1.0/installed-4f7... (dependency of Spock-0.5.0.0)
next goal: case-insensitive (dependency of Spock-0.5.0.0)
rejecting: case-insensitive-1.2.0.5, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.1,
1.2.0.0 (conflict: Spock => case-insensitive==1.1.*)
rejecting: case-insensitive-1.1.0.3, 1.1.0.2, 1.1.0.1, 1.1 (conflict:
base==4.8.1.0/installed-4f7..., case-insensitive => base>=3 && <4.8)
rejecting: case-insensitive-1.0.0.2, 1.0.0.1, 1.0, 0.4.0.4, 0.4.0.3, 0.4.0.2,
0.4.0.1, 0.4, 0.3.0.1, 0.3, 0.2.0.2, 0.2.0.1, 0.2, 0.1 (conflict: Spock =>
case-insensitive==1.1.*)
Dependency tree exhaustively searched.