bp_register_theme_package( array $theme = array(), bool $override = true )

function bp_register_theme_package( $theme = array(), $override = true ) {

	// Create new BP_Theme_Compat object from the $theme array.
	if ( is_array( $theme ) ) {
		$theme = new BP_Theme_Compat( $theme );
	}

	// Bail if $theme isn't a proper object.
	if ( ! is_a( $theme, 'BP_Theme_Compat' ) ) {
		return;
	}

	// Load up BuddyPress.
	$bp = buddypress();

	// Only set if the theme package was not previously registered or if the
	// override flag is set.
	if ( empty( $bp->theme_compat->packages[$theme->id] ) || ( true === $override ) ) {
		$bp->theme_compat->packages[$theme->id] = $theme;
	}
}