--- a/setup.py	Tue Mar 07 13:12:27 2017 +0100
+++ b/setup.py	Tue Mar 07 13:24:07 2017 +0100
@@ -2,25 +2,21 @@
 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]
+META_PATH = 'hgext3rd/evolve/metadata.py'
+
+def get_metadata():
+    meta = {}
+    fullpath = join(dirname(__file__), META_PATH)
+    execfile(fullpath, meta)
+    return meta
 
-def min_hg_version(relpath):
+def get_version():
     '''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 'testedwith' in line:
-            if "'" in line:
-                return min(line.split("'")[1].split())
+    return get_metadata()['__version__']
+
+def min_hg_version():
+    '''Read version info from a file without importing it'''
+    return get_metadata()['minimumhgversion']
 
 py_modules = [
     'hgext3rd.evolve.serveronly',
@@ -34,19 +30,16 @@
     py_modules.append('hgext3rd.evolve.hack.inhibit')
     py_modules.append('hgext3rd.evolve.hack.directaccess')
 
-
-EVOLVE_PATH = 'hgext3rd/evolve/__init__.py'
-
 requires = []
 try:
     import mercurial
     mercurial.__all__
 except ImportError:
-    requires.append('mercurial>=%s' % min_hg_version(EVOLVE_PATH))
+    requires.append('mercurial>=%s' % min_hg_version())
 
 setup(
     name='hg-evolve',
-    version=get_version(EVOLVE_PATH),
+    version=get_version(),
     author='Pierre-Yves David',
     maintainer='Pierre-Yves David',
     maintainer_email='pierre-yves.david@ens-lyon.org',