Resolving dependencies...
cabal: Could not resolve dependencies:
trying: DCFL-0.1.5.0 (user goal)
next goal: deepseq (dependency of DCFL-0.1.5.0)
rejecting: deepseq-1.3.0.2/installed-733..., 1.4.1.1, 1.4.1.0, 1.4.0.0,
1.3.0.2, 1.3.0.1, 1.3.0.0, 1.2.0.1, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0,
1.0.0.0 (conflict: DCFL => deepseq==1.4)
Dependency tree exhaustively searched.