--- a/hgext/evolve.py	Mon Nov 03 10:25:20 2014 +0000
+++ b/hgext/evolve.py	Mon Oct 20 13:54:46 2014 +0300
@@ -19,6 +19,7 @@
     - improves some aspect of the early implementation in Mercurial core
 '''
 
+__version__ = '5.1.0'
 testedwith = '3.2'
 buglink = 'http://bz.selenic.com/'
 
@@ -85,7 +86,7 @@
         return oldmemfilectx(*args, **kwargs)
 else:
     raise util.Abort('Your Mercurial is too old for this version of Evolve\n'
-                     'requires version 3.2 or above')
+                     'requires version %s or above' % min(testedwith.split()))
 
 
 # This extension contains the following code

--- a/setup.py	Mon Nov 03 10:25:20 2014 +0000
+++ b/setup.py	Mon Oct 20 13:54:46 2014 +0300
@@ -2,10 +2,21 @@
 # Credit to Augie Fackler <durin42@gmail.com>
 
 from distutils.core import setup
+from os.path import dirname, join
+
+def get_version(relpath):
+    '''Read version info from a file without importing it'''
+    for line in open(join(dirname(__file__), relpath), 'rb'):
+        # Decode to a fail-safe string for PY3
+        # (gives unicode object in PY2)
+        line = line.decode('utf8')
+        if '__version__' in line:
+          if "'" in line:
+            return line.split("'")[1]
 
 setup(
     name='hg-evolve',
-    version='5.0.0',
+    version=get_version('hgext/evolve.py'),
     author='Pierre-Yves David',
     maintainer='Pierre-Yves David',
     maintainer_email='pierre-yves.david@ens-lyon.org',