Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: data-accessor (user goal)
rejecting: data-accessor-0.2.2.7, data-accessor-0.2.2.6,
data-accessor-0.2.2.5, data-accessor-0.2.2.4, data-accessor-0.2.2.3,
data-accessor-0.2.2.2, data-accessor-0.2.2.1, data-accessor-0.2.2,
data-accessor-0.2.1.8, data-accessor-0.2.1.7, data-accessor-0.2.1.6,
data-accessor-0.2.1.5, data-accessor-0.2.1.4, data-accessor-0.2.1.3,
data-accessor-0.2.1.2, data-accessor-0.2.1, data-accessor-0.2.0.2,
data-accessor-0.2.0.1 (constraint from user target requires ==0.2)
trying: data-accessor-0.2
trying: base-4.9.0.0/installed-4.9... (dependency of data-accessor-0.2)
next goal: transformers (dependency of data-accessor-0.2)
rejecting: transformers-0.5.2.0/installed-0.5..., transformers-0.5.2.0,
transformers-0.5.1.0, transformers-0.5.0.1, transformers-0.5.0.0,
transformers-0.4.3.0, transformers-0.4.2.0, transformers-0.4.1.0,
transformers-0.3.0.0, transformers-0.2.2.1, transformers-0.2.1.0,
transformers-0.2.0.0, transformers-0.1.4.0, transformers-0.1.3.0,
transformers-0.1.1.0, transformers-0.1.0.1 (conflict: data-accessor =>
transformers>=0.0.1 && <0.1)
rejecting: transformers-0.0.1.0 (conflict: base==4.9.0.0/installed-4.9...,
transformers => base<4.3)
rejecting: transformers-0.0.0.0, transformers-0.5.0.2, transformers-0.4.0.0,
transformers-0.2.2.0, transformers-0.1.0.0 (conflict: data-accessor =>
transformers>=0.0.1 && <0.1)
Dependency tree exhaustively searched.