static void
update_obsoletes(const URPM__Package pkg, HV *obsoletes) {
  if (pkg->h) {
    struct rpmtd_s td;

    /* update all provides */
    if (headerGet(pkg->h, RPMTAG_OBSOLETENAME, &td, HEADERGET_DEFAULT)) {
      unsigned int i;
      for (i = 0; i < rpmtdCount(&td); ++i)
	update_hash_entry(obsoletes, rpmtdNextString(&td), 0, 1, 0, pkg);
    }
  } else {
    char *ps, *s;

    if ((s = pkg->obsoletes) != NULL && *s != 0) {
      char *es;

      ps = strchr(s, '@');
      while(ps != NULL) {
	*ps = 0; es = strchr(s, '['); if (!es) es = strchr(s, ' '); *ps = '@';
	update_hash_entry(obsoletes, s, es != NULL ? es-s : ps-s, 1, 0, pkg);
	s = ps + 1; ps = strchr(s, '@');
      }
      es = strchr(s, '['); if (!es) es = strchr(s, ' ');
      update_hash_entry(obsoletes, s, es != NULL ? es-s : 0, 1, 0, pkg);
    }
  }