solvable_is_irrelevant_patch
int solvable_is_irrelevant_patch(Solvable *s, Map *installedmap);
if (ispatch && solvable_is_irrelevant_patch(s, installedmap))
if (ispatch && interesting && solvable_is_irrelevant_patch(s, installedmap))
if (!strncmp("patch:", pool_id2str(pool, s->name), 6) && solvable_is_irrelevant_patch(s, &installedmap))