Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: relative-date (user goal)
rejecting: relative-date-0.0.1 (constraint from user target requires ==0.0.0)
trying: relative-date-0.0.0
trying: base-4.9.0.0/installed-4.9... (dependency of relative-date-0.0.0)
next goal: time (dependency of relative-date-0.0.0)
rejecting: time-1.6.0.1/installed-1.6..., time-1.7.0.1, time-1.7,
time-1.6.0.1, time-1.6, time-1.5.0.1, time-1.5, time-1.4.2, time-1.4.1,
time-1.4.0.2, time-1.4.0.1, time-1.4, time-1.3, time-1.2.0.5, time-1.2.0.4,
time-1.2.0.3, time-1.2.0.2, time-1.2.0.1, time-1.2 (conflict: relative-date =>
time>=1.1.2.2 && <1.2)
rejecting: time-1.1.4 (conflict: base==4.9.0.0/installed-4.9..., time =>
base>=4 && <4.7)
rejecting: time-1.1.3 (conflict: base==4.9.0.0/installed-4.9..., time =>
base>=3 && <4.7 || <3)
rejecting: time-1.1.2.4, time-1.1.2.3 (conflict:
base==4.9.0.0/installed-4.9..., time => base>=2 && <4.9)
rejecting: time-1.1.2.2 (conflict: base==4.9.0.0/installed-4.9..., time =>
base>=2 && <4.3)
rejecting: time-1.1.2.1, time-1.1.2.0, time-1.0 (conflict: relative-date =>
time>=1.1.2.2 && <1.2)
Dependency tree exhaustively searched.