$page = int($page) || 1;

    $page = (defined $page ? int($page) : 1) || 1;

    # !!! quick hack; this is to make HEAD requests return the right
    # MIME type.  This is set in the view as well, but the view isn't
    # called for HEAD requests.  There should be a cleaner solution...
    $c->response->content_type('application/x-nix-export');
    $c->response->header('Content-Disposition' => 'attachment; filename=' . $c->stash->{name} . '.closure.gz');