function bp_admin_setting_callback_theme_package_id() {
	$options = '';

	/*
	 * Note: This should never be empty. /bp-templates/ is the
	 * canonical backup if no other packages exist. If there's an error here,
	 * something else is wrong.
	 *
	 * See BuddyPress::register_theme_packages()
	 */
	foreach ( (array) buddypress()->theme_compat->packages as $id => $theme ) {
		$options .= sprintf(
			'<option value="%1$s" %2$s>%3$s</option>',
			esc_attr( $id ),
			selected( $theme->id, bp_get_theme_package_id(), false ),
			esc_html( $theme->name )
		);
	}

	if ( $options ) : ?>
		<select name="_bp_theme_package_id" id="_bp_theme_package_id" aria-describedby="_bp_theme_package_description"><?php echo $options; ?></select>
		<p id="_bp_theme_package_description" class="description"><?php esc_html_e( 'The selected Template Pack will serve all BuddyPress templates.', 'buddypress' ); ?></p>

	<?php else : ?>
		<p><?php esc_html_e( 'No template packages available.', 'buddypress' ); ?></p>

	<?php endif;
}