Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: data-accessor (user goal)
rejecting: data-accessor-0.2.2.6, 0.2.2.5, 0.2.2.4, 0.2.2.3, 0.2.2.2, 0.2.2.1,
0.2.2, 0.2.1.8, 0.2.1.7, 0.2.1.6, 0.2.1.5, 0.2.1.4, 0.2.1.3, 0.2.1.2, 0.2.1,
0.2.0.2, 0.2.0.1 (global constraint requires ==0.2)
trying: data-accessor-0.2
trying: base-4.7.0.1/installed-e4b... (dependency of data-accessor-0.2)
next goal: transformers (dependency of data-accessor-0.2)
rejecting: transformers-0.3.0.0/installed-16a..., 0.4.3.0, 0.4.2.0, 0.4.1.0,
0.3.0.0, 0.2.2.1, 0.2.2.0, 0.2.1.0, 0.2.0.0, 0.1.4.0, 0.1.3.0, 0.1.1.0,
0.1.0.1, 0.1.0.0 (conflict: data-accessor => transformers>=0.0.1 && <0.1)
rejecting: transformers-0.0.1.0 (conflict: base==4.7.0.1/installed-e4b...,
transformers => base<4.3)
rejecting: transformers-0.0.0.0, 0.4.0.0 (conflict: data-accessor =>
transformers>=0.0.1 && <0.1)
Dependency tree exhaustively searched.