Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hurdle (user goal)
rejecting: hurdle-0.4.0, 0.3.0 (global constraint requires ==0.2.0)
trying: hurdle-0.2.0
trying: base-4.7.0.1/installed-e4b... (dependency of hurdle-0.2.0)
next goal: kangaroo (dependency of hurdle-0.2.0)
rejecting: kangaroo-0.4.0, 0.3.0, 0.2.0 (conflict: hurdle => kangaroo>=0.1.0
&& <0.2)
trying: kangaroo-0.1.0
next goal: array (dependency of hurdle-0.2.0)
rejecting: array-0.5.0.0/installed-98a..., 0.5.1.0, 0.5.0.0, 0.4.0.1, 0.4.0.0
(conflict: hurdle => array>=0.2.0.0 && <0.4)
rejecting: array-0.3.0.3 (conflict: base==4.7.0.1/installed-e4b..., array =>
base>=4.2 && <4.5)
rejecting: array-0.3.0.2, 0.3.0.1 (conflict: base==4.7.0.1/installed-e4b...,
array => base>=4.2 && <4.4)
rejecting: array-0.3.0.0 (conflict: base==4.7.0.1/installed-e4b..., array =>
base>=3 && <4.4)
rejecting: array-0.2.0.0 (conflict: kangaroo => array>=0.3.0.0 && <0.4)
rejecting: array-0.1.0.0 (conflict: hurdle => array>=0.2.0.0 && <0.4)
Dependency tree exhaustively searched.