get version from git

.bzrignore

@@ -1,4 +0,0 @@
-build
-dist
-oxutils.egg-info
-ox/__version.py

setup.py

@@ -1,21 +1,24 @@
 #!/usr/bin/env python
 # vi:si:et:sw=4:sts=4:ts=4
 # encoding: utf-8
+
 try:
     from setuptools import setup
 except:
     from distutils.core import setup
 
+def get_revision():
+    import subprocess
+    return subprocess.check_output(['git', 'rev-list', 'HEAD', '--count']).strip()
+
 def get_version():
     import os
     import re
-    info = os.path.join(os.path.dirname(__file__), '.bzr/branch/last-revision')
+    _git = os.path.join(os.path.dirname(__file__), '.git')
     __version = os.path.join(os.path.dirname(__file__), 'ox/__version.py')
     changelog = os.path.join(os.path.dirname(__file__), 'debian/changelog')
-    if os.path.exists(info):
-        f = open(info)
-        rev = int(f.read().split()[0])
-        f.close()
+    if os.path.exists(_git):
+        rev = get_revision()
         if rev:
             version = "2.3.%d" % rev
             with open(__version, 'w') as fd: