Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: trifecta (user goal)
rejecting: trifecta-1.6.1, trifecta-1.6, trifecta-1.5.2, trifecta-1.5.1.3,
trifecta-1.5.1.2, trifecta-1.5.1.1, trifecta-1.5.1, trifecta-1.5,
trifecta-1.4.3, trifecta-1.4.2, trifecta-1.4.1, trifecta-1.4,
trifecta-1.2.1.1, trifecta-1.2.1, trifecta-1.2, trifecta-1.1, trifecta-1.0,
trifecta-0.53, trifecta-0.52, trifecta-0.51.0.1, trifecta-0.51,
trifecta-0.50.2.1, trifecta-0.50.1, trifecta-0.50, trifecta-0.49.1,
trifecta-0.49, trifecta-0.47, trifecta-0.46, trifecta-0.45, trifecta-0.44,
trifecta-0.43, trifecta-0.42, trifecta-0.41, trifecta-0.40, trifecta-0.39,
trifecta-0.38, trifecta-0.37, trifecta-0.36.3, trifecta-0.36.2,
trifecta-0.36.1, trifecta-0.36, trifecta-0.35, trifecta-0.34, trifecta-0.32.1,
trifecta-0.32, trifecta-0.31 (constraint from user target requires ==0.30)
trying: trifecta-0.30
trying: time-1.6.0.1/installed-1.6... (dependency of unix-2.7.2.1)
next goal: deepseq (dependency of time-1.6.0.1/installed-1.6...)
rejecting: deepseq-1.4.2.0/installed-1.4... (conflict: deepseq =>
array==0.5.1.1/installed-0.5..., trifecta => array>=0.3.0.2 && <0.4)
rejecting: deepseq-1.4.2.0, deepseq-1.4.1.2, deepseq-1.4.1.1, deepseq-1.4.1.0,
deepseq-1.4.0.0, deepseq-1.3.0.2, deepseq-1.3.0.1, deepseq-1.3.0.0,
deepseq-1.2.0.1, deepseq-1.2.0.0, deepseq-1.1.0.2, deepseq-1.1.0.1,
deepseq-1.1.0.0, deepseq-1.0.0.0 (conflict: time =>
deepseq==1.4.2.0/installed-1.4...)
Dependency tree exhaustively searched.