Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: FilePather (user goal)
rejecting: FilePather-0.2.0 (global constraint requires ==0.1.8)
trying: FilePather-0.1.8
next goal: data-lens (dependency of FilePather-0.1.8)
rejecting: data-lens-2.10.7, 2.10.6, 2.10.5, 2.10.4, 2.10.3, 2.10.2, 2.10.1,
2.10.0, 2.9.0, 2.0.4.1, 2.0.4, 2.0.3, 2.0.2, 2.0.1, 2.0.0, 1.8.0.3, 1.8.0.2,
1.8.0.1, 1.8.0 (conflict: FilePather => data-lens>=4)
Dependency tree exhaustively searched.