Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: probability (user goal)
rejecting: probability-0.2.5, 0.2.4.1, 0.2.4, 0.2.3.1 (global constraint
requires ==0.2.3)
trying: probability-0.2.3
trying: base-4.8.1.0/installed-4f7... (dependency of probability-0.2.3)
next goal: transformers (dependency of probability-0.2.3)
rejecting: transformers-0.4.2.0/installed-21d..., 0.4.3.0, 0.4.2.0, 0.4.1.0,
0.3.0.0 (conflict: probability => transformers>=0.0.1 && <0.3)
trying: transformers-0.2.2.1
rejecting: transformers-0.2.2.1:+applicativeinbase (conflict:
base==4.8.1.0/installed-4f7..., transformers-0.2.2.1:applicativeinbase =>
base>=2 && <4.8)
rejecting: transformers-0.2.2.1:-applicativeinbase (conflict:
base==4.8.1.0/installed-4f7..., transformers-0.2.2.1:applicativeinbase =>
base>=1.0 && <2)
Dependency tree exhaustively searched.