Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: HMap (user goal)
rejecting: HMap-1.2.7, 1.2.6, 1.2.5, 1.2.4, 1.2.3, 1.2.2, 1.2.1, 1.2.0, 1.1.9,
1.1.8, 1.1.7, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1.0, 1.0.5, 1.0.3,
1.0.2, 1.0.1, 0.912, 0.902, 0.901, 0.91 (global constraint requires ==0.9)
trying: HMap-0.9
next goal: base (dependency of HMap-0.9)
rejecting: base-4.8.1.0/installed-4f7... (conflict: HMap => base>=2 && <=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.