Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: smcdel-1.2.0 (user goal)
[__1] next goal: cudd (dependency of smcdel)
[__1] rejecting: cudd-0.1.0.4 (conflict: smcdel => cudd==0.1.0.0)
[__1] skipping: cudd-0.1.0.3.1, cudd-0.1.0.3, cudd-0.1.0.2, cudd-0.1.0.1 (has
the same characteristics that caused the previous version to fail: excluded by
constraint '==0.1.0.0' from 'smcdel')
[__1] trying: cudd-0.1.0.0
[__2] next goal: base (dependency of smcdel)
[__2] rejecting: base-4.14.1.0/installed-4.14.1.0 (conflict: cudd => base>=4.6
&& <4.8)
[__2] skipping: base-4.16.0.0, base-4.15.1.0, base-4.15.0.0, base-4.14.3.0,
base-4.14.2.0, base-4.14.1.0, base-4.14.0.0, base-4.13.0.0, 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 (has the same
characteristics that caused the previous version to fail: excluded by
constraint '>=4.6 && <4.8' from 'cudd')
[__2] rejecting: 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, cudd, smcdel)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: base, smcdel, cudd