Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: Eq (user goal)
rejecting: Eq-1.1.3 (constraint from user target requires ==1.1.2)
trying: Eq-1.1.2
trying: base-4.9.0.0/installed-4.9... (dependency of Eq-1.1.2)
next goal: array (dependency of Eq-1.1.2)
rejecting: array-0.5.1.1/installed-0.5..., array-0.5.1.1, array-0.5.1.0,
array-0.5.0.0 (conflict: Eq => array>=0.4 && <0.5)
rejecting: array-0.4.0.1 (conflict: base==4.9.0.0/installed-4.9..., array =>
base>=4.2 && <4.7)
rejecting: array-0.4.0.0 (conflict: base==4.9.0.0/installed-4.9..., array =>
base>=4.2 && <4.6)
rejecting: array-0.3.0.3, array-0.3.0.2, array-0.3.0.1, array-0.3.0.0,
array-0.2.0.0, array-0.1.0.0 (conflict: Eq => array>=0.4 && <0.5)
Dependency tree exhaustively searched.