--- setup.py
+++ setup.py
@@ -1,4 +1,6 @@
-from setuptools import setup
+#!/usr/bin/env python
+
+from distutils.core import setup
 
 from pyrrd import meta
 from pyrrd.util import dist
--- pyrrd/util/__init__.py
+++ pyrrd/util/__init__.py
@@ -1,6 +1,3 @@
-from time import mktime
-from datetime import datetime
-
 try:
     from xml.etree import ElementTree
 except ImportError:
@@ -19,6 +16,8 @@
     >>> type(now)
     <type 'int'>
     '''
+    from time import mktime
+    from datetime import datetime
     if not dt_obj:
         dt_obj = datetime.now()
     return int(mktime(dt_obj.timetuple()))