Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: syb-extras (user goal)
rejecting: syb-extras-0.3, 0.2.4.1, 0.2.4 (global constraint requires ==0.2.3)
trying: syb-extras-0.2.3
next goal: eq (dependency of syb-extras-0.2.3)
rejecting: eq-4.0.4, 4.0.3, 4.0.2, 4.0.1, 4.0, 3.1.1, 3.1 (conflict:
syb-extras => eq==3.0.*)
trying: eq-3.0
next goal: semigroupoids (dependency of eq-3.0)
rejecting: semigroupoids-5.0.0.4, 5.0.0.3, 5.0.0.2, 5.0.0.1, 5, 4.3, 4.2,
4.0.4, 4.0.3, 4.0.2.1, 4.0.2, 4.0.1, 4.0, 3.1 (conflict: eq =>
semigroupoids==3.0.*)
trying: semigroupoids-3.0.3
next goal: contravariant (dependency of semigroupoids-3.0.3)
rejecting: contravariant-1.3.3, 1.3.2, 1.3.1.1, 1.3.1, 1.3, 1.2.2.1, 1.2.2,
1.2.1, 1.2.0.1, 1.2, 1.1, 1.0 (conflict: semigroupoids =>
contravariant>=0.2.0.1 && <1)
trying: contravariant-0.6.1.1
trying: transformers-compat-0.4.0.4 (dependency of contravariant-0.6.1.1)
trying: transformers-compat-0.4.0.4:-two
trying: transformers-compat-0.4.0.4:-three
next goal: transformers (dependency of semigroupoids-3.0.3)
rejecting: transformers-0.4.2.0/installed-21d..., 0.4.3.0, 0.4.2.0, 0.4.1.0
(conflict: semigroupoids => transformers>=0.2 && <0.4)
rejecting: transformers-0.3.0.0, 0.2.2.1, 0.2.2.0, 0.2.1.0, 0.2.0.0 (conflict:
transformers-compat-0.4.0.4:three => transformers>=0.4.1 && <0.5)
rejecting: transformers-0.1.4.0, 0.1.3.0, 0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.1.0,
0.0.0.0, 0.4.0.0 (conflict: semigroupoids => transformers>=0.2 && <0.4)
Dependency tree exhaustively searched.