Resolving dependencies... cabal: Could not resolve dependencies: next goal: numeric-prelude (user goal) rejecting: numeric-prelude-0.4.2, 0.4.1, 0.4.0.3, 0.4.0.2, 0.4.0.1, 0.4, 0.3.0.2, 0.3.0.1, 0.3, 0.2.2.1, 0.2.2, 0.2.1, 0.2, 0.1.3.4, 0.1.3.3 (global constraint requires ==0.1.3.2) trying: numeric-prelude-0.1.3.2 trying: base-4.7.0.1/installed-e4b... (dependency of numeric-prelude-0.1.3.2) trying: QuickCheck-2.8.1 (dependency of numeric-prelude-0.1.3.2) trying: containers-0.5.5.1/installed-23e... (dependency of QuickCheck-2.8.1) trying: numeric-prelude-0.1.3.2:-buildtests rejecting: numeric-prelude-0.1.3.2:+splitbase (conflict: containers => array==0.5.0.0/installed-98a..., numeric-prelude-0.1.3.2:splitbase => array>=0.1 && <0.4) rejecting: numeric-prelude-0.1.3.2:-splitbase (conflict: base==4.7.0.1/installed-e4b..., numeric-prelude-0.1.3.2:splitbase => base>=1.0 && <2) Backjump limit reached (change with --max-backjumps).