solvable_identical
if (s2->repo != pool->installed && solvable_identical(s, s2))
if (is->evr == ps->evr && solvable_identical(ps, is))
if (s->evr == ns->evr && solvable_identical(s, ns))
int solvable_identical(Solvable *s1, Solvable *s2);
if (s->evr == si->evr && solvable_identical(s, si))
if (s->evr == s2->evr && solvable_identical(s, s2))
if (s->evr == s2->evr && solvable_identical(s, s2))