Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: yi-contrib (user goal)
rejecting: yi-contrib-0.10.1, yi-contrib-0.10.0, yi-contrib-0.8.2,
yi-contrib-0.8.1 (constraint from user target requires ==0.8.0)
trying: yi-contrib-0.8.0
trying: time-1.6.0.1/installed-1.6... (dependency of yi-contrib-0.8.0)
next goal: yi (dependency of yi-contrib-0.8.0)
rejecting: yi-0.13.5, yi-0.13.4, yi-0.13.3, yi-0.13.2, yi-0.13.1, yi-0.13.0.2,
yi-0.13.0.1, yi-0.13, yi-0.12.6, yi-0.12.5, yi-0.12.4, yi-0.12.3, yi-0.12.2,
yi-0.12.1, yi-0.12.0, yi-0.11.2, yi-0.11.1, yi-0.11.0, yi-0.10.1, yi-0.10.0,
yi-0.8.2, yi-0.8.1 (conflict: yi-contrib => yi==0.8.0)
rejecting: yi-0.8.0 (conflict: time==1.6.0.1/installed-1.6..., yi => time>=1.1
&& <1.5)
rejecting: yi-0.7.2, yi-0.7.1, yi-0.7.0, yi-0.6.7.0, yi-0.6.6.0, yi-0.6.5.0,
yi-0.6.4.0, yi-0.6.3.0, yi-0.6.2.4, yi-0.6.2.3, yi-0.6.2.2, yi-0.6.1,
yi-0.6.0, yi-0.5.2, yi-0.5.0.1, yi-0.4.6.2, yi-0.4.6, yi-0.4.3, yi-0.4.1,
yi-0.4, yi-0.3, yi-0.2 (conflict: yi-contrib => yi==0.8.0)
Dependency tree exhaustively searched.