Widget Sets

I have an installation with several blogs and a good number of custom Global Widgets.
When creating or editing a widget set on a Blog, the Available Widget column appears in somewhat random order. I want to sort the Available Widgets by name. In browsing the MT files I found the edit_widget.tmpl and the following code which displays the Available Widgets column:

              <div id="available-column" class="pkg">

                  <p><__trans phrase="Available Widgets"></p>

              <mt:loop name="available">

                  <div id="module-<mt:var name="id" escape="html">" class="module pkg">

                    <div class="module-name"><a href="javascript:void(0)"><mt:var name="name" escape="html"></a></div>

                    <div class="module-edit"><a href="<mt:var name="script_url">?__mode=view&amp;_type=template&amp;id=<mt:var name="id" escape="url">&amp;blog_id=<mt:var name="blog_id" escape="url">" target="_new"><__trans phrase="edit"></a></div>

                  </div>

              </mt:loop>

              </div>

    $param->{installed} = \@inst_modules if @inst_modules;

    my @avail_modules = map { {

        id => $_, name => $all_widgets{$_}{name}, blog_id => $all_widgets{$_}{blog_id}

    } } keys %all_widgets;

    $param->{available} = \@avail_modules;

my $res = $app->run_callbacks('cms_edit.widgetset', $app, $id, $wtmpl, $param);
if (!$res) {
return $app->error($app->callback_errstr());
}

$app->load_tmpl('edit_widget.tmpl', $param);

Based on the documentation for mt:Loop I thought I could add sort_by="value" to the loop for the "available" hash but it does not effect the order of the display. I even tried sort_by="name" since name is one of the hash keys.

Where am I going wrong? I don't care about the case where one might drag a Widget from installed back into available. I just want the initial display sorted by Widget Name, ASC.

Is there a simple hack to the code setting up the "available" hash in Template.PM?

Your advice is appreciated.
Merv