setup.py: use our own get_version()

setup.py

@@ -1,17 +1,36 @@
 #!/usr/bin/env python
 
+import os
+import subprocess
 from os.path import exists
 
-from version import get_git_version
-
 try:
     from setuptools import setup
 except ImportError:
     from distutils.core import setup
 
+def get_version():
+    '''Use the VERSION, if absent generates a version with git describe, if not
+       tag exists, take 0.0.0- and add the length of the commit log.
+    '''
+    if os.path.exists('VERSION'):
+        with open('VERSION', 'r') as v:
+            return v.read()
+    if os.path.exists('.git'):
+        p = subprocess.Popen(['git', 'describe', '--dirty', '--match=v*'], stdout=subprocess.PIPE,
+                             stderr=subprocess.PIPE)
+        result = p.communicate()[0]
+        if p.returncode == 0:
+            result = result.split()[0][1:]
+        else:
+            result = '0.0.0-%s' % len(subprocess.check_output(
+                ['git', 'rev-list', 'HEAD']).splitlines())
+        return result.replace('-', '.').replace('.g', '+g')
+    return '0.0.0'
+
 setup(
     name='django-tenant-schemas',
-    version=get_git_version(),
+    version=get_version(),
     author='Bernardo Pires Carneiro',
     author_email='carneiro.be@gmail.com',
     packages=[