Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: hal (user goal)
[__0] rejecting: hal-0.4.4, hal-0.4.3, hal-0.4.2, hal-0.4.1, hal-0.4.0,
hal-0.3.3, hal-0.3.2, hal-0.3.1, hal-0.3.0, hal-0.2.3, hal-0.2.2, hal-0.2.0
(constraint from user target requires ==0.1.6)
[__0] trying: hal-0.1.6
[__1] next goal: time (dependency of hal)
[__1] rejecting: time-1.9.3/installed-1.9.3 (conflict: hal => time>=1.8.0.2 &&
<1.9)
[__1] skipping: time-1.11.1.1, time-1.11.1, time-1.11, time-1.10, time-1.9.3,
time-1.9.2, time-1.9.1, time-1.9 (has the same characteristics that caused the
previous version to fail: excluded by constraint '>=1.8.0.2 && <1.9' from
'hal')
[__1] trying: time-1.8.0.4
[__2] next goal: base (dependency of hal)
[__2] rejecting: base-4.14.1.0/installed-4.14.1.0 (conflict: time => base>=4.7
&& <4.13)
[__2] skipping: base-4.14.1.0, base-4.14.0.0, base-4.13.0.0 (has the same
characteristics that caused the previous version to fail: excluded by
constraint '>=4.7 && <4.13' from 'time')
[__2] rejecting: base-4.12.0.0, base-4.11.1.0, base-4.11.0.0, base-4.10.1.0,
base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0, base-4.8.1.0,
base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1,
base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0,
base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0,
base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from
non-upgradeable package requires installed instance)
[__2] fail (backjumping, conflict set: base, hal, time)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hal, time, base