$NetBSD: patch-aa,v 1.2 2012/02/15 22:06:02 gls Exp $

Clear path to env(1). setup.py will then use python absolute path directly.
--- setup.py.orig	2011-07-04 22:30:30.000000000 +0000
+++ setup.py
@@ -130,6 +130,7 @@ os.environ["SGML_CATALOG_FILES"] = cat
         else:
             style_set = ""
 
+        env_exec = ''
         script_args = { 'env_executable': env_exec,
                         'env_args': env_exec and (' %s' % env_args) or '',
                         'py_executable': py_exec,