static
PoolItem_Ref
findArchUpdateItem( const ResPool & pool, PoolItem_Ref item )
{
  LookForArchUpdate info;

  invokeOnEach( pool.byNameBegin( item->name() ),
                pool.byNameEnd( item->name() ),
                // get uninstalled, equal kind and arch, better edition
                functor::chain (
                  functor::chain (
                    functor::chain (
                      resfilter::ByUninstalled (),
                      resfilter::ByKind( item->kind() ) ),
                    resfilter::byArch<CompareByEQ<Arch> >( item->arch() ) ),
                  resfilter::byEdition<CompareByGT<Edition> >( item->edition() )),
                functor::functorRef<bool,PoolItem> (info) );

  _XDEBUG("findArchUpdateItem(" << item << ") => " << info.best);
  return info.best;
}