Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: intervals (user goal)
rejecting: intervals-0.7.1, 0.7.0.1, 0.7, 0.6, 0.5.1.1, 0.5.1, 0.5, 0.4.2,
0.4.1, 0.4, 0.3, 0.2.2.1, 0.2.2, 0.2.1.1, 0.2.1, 0.2.0.3, 0.2.0.2, 0.2.0.1,
0.2.0, 0.1.3 (global constraint requires ==0.1.2)
trying: intervals-0.1.2
trying: base-4.7.0.1/installed-e4b... (dependency of intervals-0.1.2)
next goal: array (dependency of intervals-0.1.2)
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: intervals => array>=0.3.0 && <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, 0.1.0.0 (conflict: intervals => array>=0.3.0 &&
<0.4)
Dependency tree exhaustively searched.