any_mode.m:009: Error: a solver type such as `foo'/0 may be defined (as opposed
any_mode.m:009:   to declared) only in the implementation section.
any_mode.m:020: In clause for `p((any >> ground))':
any_mode.m:020:   in argument 1 of call to predicate `any_mode.q'/1:
any_mode.m:020:   mode error: variable `X' has instantiatedness `any',
any_mode.m:020:   expected instantiatedness was `ground'.