SOLVABLE_SOURCEARCH
repodata_set_constantid(data, solvid, SOLVABLE_SOURCEARCH, ARCH_SRC);
repodata_set_constantid(data, solvid, SOLVABLE_SOURCEARCH, ARCH_NOSRC);
repodata_set_constantid(data, solvid, SOLVABLE_SOURCEARCH, pool_strn2id(pool, sarch, strlen(sarch) - 4, 1));
archid = solvable_lookup_id(s, SOLVABLE_SOURCEARCH);