Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: monoids (user goal)
rejecting: monoids-0.3.2, 0.2.0.4, 0.2.0.3, 0.2.0.2, 0.2.0.1, 0.2.0, 0.1.36,
0.1.33, 0.1.32, 0.1.31, 0.1.30, 0.1.28, 0.1.25, 0.1.21, 0.1.20, 0.1.19,
0.1.17, 0.1.13, 0.1.10, 0.1.9, 0.1.8 (global constraint requires ==0.1.5)
trying: monoids-0.1.5
trying: QuickCheck-2.8.1 (dependency of monoids-0.1.5)
trying: transformers-0.3.0.0/installed-16a... (dependency of QuickCheck-2.8.1)
trying: category-extras-1.0.2 (dependency of monoids-0.1.5)
trying: semigroupoids-5.0.0.2 (dependency of category-extras-1.0.2)
trying: transformers-compat-0.4.0.4 (dependency of semigroupoids-5.0.0.2)
trying: transformers-compat-0.4.0.4:-two
rejecting: transformers-compat-0.4.0.4:-three (conflict:
transformers==0.3.0.0/installed-16a..., transformers-compat-0.4.0.4:three =>
transformers>=0.4.1 && <0.5)
rejecting: transformers-compat-0.4.0.4:+three (manual flag can only be changed
explicitly)
Backjump limit reached (change with --max-backjumps).