Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: esqueleto (user goal)
rejecting: esqueleto-2.2.3, 2.2.2, 2.2.1, 2.2, 2.1.3, 2.1.2.3, 2.1.2.2,
2.1.2.1, 2.1.2, 2.1.1, 2.1.0, 2.0.3, 2.0.2, 2.0.1, 2.0.0, 1.4.4, 1.4.3, 1.4.2,
1.4.1.3, 1.4.1.2, 1.4.1, 1.4, 1.3.12, 1.3.11, 1.3.10, 1.3.9, 1.3.8, 1.3.7,
1.3.6, 1.3.5, 1.3.4.6, 1.3.4.5, 1.3.4.4, 1.3.4.3, 1.3.4.2, 1.3.4, 1.3.3,
1.3.2, 1.3.1, 1.3, 1.2.4, 1.2.3, 1.2.2.1, 1.2.2, 1.2.1, 1.2, 1.0.8, 1.0.7,
1.0.6, 1.0.5, 1.0.3, 1.0.2, 1.0.1, 1.0, 0.2.9, 0.2.8, 0.2.7 (global constraint
requires ==0.2.6)
trying: esqueleto-0.2.6
next goal: base (dependency of esqueleto-0.2.6)
rejecting: base-4.7.0.1/installed-e4b... (conflict: esqueleto => base==4.5.*)
rejecting: base-4.8.0.0, 4.7.0.2, 4.7.0.1, 4.7.0.0, 4.6.0.1, 4.6.0.0, 4.5.1.0,
4.5.0.0, 4.4.1.0, 4.4.0.0, 4.3.1.0, 4.3.0.0, 4.2.0.2, 4.2.0.1, 4.2.0.0,
4.1.0.0, 4.0.0.0, 3.0.3.2, 3.0.3.1 (global constraint requires installed
instance)
Dependency tree exhaustively searched.