diff -rupN --no-dereference gtk+-2.24.33/gtk/gtk-builder-convert gtk+-2.24.33-new/gtk/gtk-builder-convert
--- gtk+-2.24.33/gtk/gtk-builder-convert 2020-12-18 06:50:58.000000000 +0100
+++ gtk+-2.24.33-new/gtk/gtk-builder-convert 2021-01-05 15:57:57.694723364 +0100
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
#
# Copyright (C) 2006-2008 Async Open Source
# Henrique Romano <henrique@async.com.br>