Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: enumerate (user goal)
rejecting: enumerate-0.2.1, enumerate-0.1.1 (constraint from user target
requires ==0.1.0)
rejecting: enumerate-0.1.0 (conflict: enumerate => enumerate==0.0.0)
rejecting: enumerate-0.0.0 (constraint from user target requires ==0.1.0)
Dependency tree exhaustively searched.