Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: numeric-prelude (user goal)
rejecting: numeric-prelude-0.4.2, numeric-prelude-0.4.1,
numeric-prelude-0.4.0.3, numeric-prelude-0.4.0.2, numeric-prelude-0.4.0.1,
numeric-prelude-0.4, numeric-prelude-0.3.0.2, numeric-prelude-0.3.0.1,
numeric-prelude-0.3, numeric-prelude-0.2.2.1, numeric-prelude-0.2.2,
numeric-prelude-0.2.1, numeric-prelude-0.2, numeric-prelude-0.1.3.4,
numeric-prelude-0.1.3.3, numeric-prelude-0.1.3.2 (constraint from user target
requires ==0.1.3.1)
trying: numeric-prelude-0.1.3.1
trying: base-4.9.0.0/installed-4.9... (dependency of numeric-prelude-0.1.3.1)
next goal: parsec (dependency of numeric-prelude-0.1.3.1)
rejecting: parsec-3.1.11, parsec-3.1.10, parsec-3.1.9, parsec-3.1.8,
parsec-3.1.7, parsec-3.1.6, parsec-3.1.5, parsec-3.1.4, parsec-3.1.3,
parsec-3.1.2, parsec-3.1.1, parsec-3.1.0, parsec-3.0.1, parsec-3.0.0
(conflict: numeric-prelude => parsec>=1 && <3)
rejecting: parsec-2.1.0.1, parsec-2.1.0.0, parsec-2.0 (conflict:
base==4.9.0.0/installed-4.9..., parsec => base<4.8)
Dependency tree exhaustively searched.