--- a/setup.py	Sun Sep 20 14:40:08 2015 -0700
+++ b/setup.py	Sun Sep 20 19:11:28 2015 -0700
@@ -1,7 +1,5 @@
 import os
 import os.path
-import time
-import subprocess
 from setuptools import setup, find_packages
 
 
@@ -10,67 +8,19 @@
         return fp.read()
 
 
-def runcmd(cmd):
-    p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
-                         stderr=subprocess.PIPE)
-    out, err = p.communicate()
-    return out, err
-
-
-# Figure out the version.
-# (this is loosely based on what Mercurial does)
-version = None
-try:
-    if os.path.isdir(os.path.join(os.path.dirname(__file__), '.hg')):
-        cmd = ['hg', 'log', '-r', '.', '--template', '{tags}\n']
-        tags, err = runcmd(cmd)
-        versions = [t for t in tags.split() if t[0].isdigit()]
-
-        cmd = ['hg', 'id', '-i']
-        hgid, err = runcmd(cmd)
-        hgid = hgid.strip()
-
-        if versions:
-            # Use tag found at the current revision. Add dirty flag if any.
-            version = versions[-1]
-            if hgid.endswith('+'):
-                version += '+'
-        else:
-            # Use latest tag.
-            cmd = ['hg', 'parents', '--template', '{latesttag}+{latesttagdistance}-']
-            version, err = runcmd(cmd)
-            version += hgid
-        if version.endswith('+'):
-            version += time.strftime('%Y%m%d')
-except OSError:
-    # Mercurial isn't installed, or not in the PATH.
-    version = None
-
-if version:
-    f = open("wikked/__version__.py", "w")
-    f.write('# this file is autogenerated by setup.py\n')
-    f.write('version = "%s"\n' % version)
-    f.close()
-
-
-try:
-    from wikked import __version__
-    version = __version__.version
-except ImportError:
-    version = 'unknown'
-
-
 setup(
         name='Wikked',
-        version=version,
         description=("A wiki engine entirely managed with text files "
-            "stored in a revision control system."),
+                     "stored in a revision control system."),
         author='Ludovic Chabant',
         author_email='ludovic@chabant.com',
         url="https://github.com/ludovicchabant/Wikked",
         license="Apache 2.0",
         keywords="wiki mercurial hg git",
         packages=find_packages(exclude=["tests"]),
+        setup_requires=['setuptools_scm'],
+        use_scm_version={
+            'write_to': 'wikked/__version__.py'},
         install_requires=[
             'Flask==0.10.1',
             'Flask-Bcrypt==0.5.2',
@@ -90,19 +40,17 @@
         include_package_data=True,
         zip_safe=False,
         classifiers=[
-                'Development Status :: 3 - Alpha',
-                'License :: OSI Approved :: Apache Software License',
-                'Environment :: Console',
-                'Operating System :: MacOS :: MacOS X',
-                'Operating System :: Unix',
-                'Operating System :: POSIX',
-                'Operating System :: Microsoft :: Windows',
-                'Programming Language :: Python',
-            ],
+            'Development Status :: 3 - Alpha',
+            'License :: OSI Approved :: Apache Software License',
+            'Environment :: Console',
+            'Operating System :: MacOS :: MacOS X',
+            'Operating System :: Unix',
+            'Operating System :: POSIX',
+            'Operating System :: Microsoft :: Windows',
+            'Programming Language :: Python'],
         entry_points={
                 'console_scripts': [
-                    'wk = wikked.witch:real_main'
-                ]
-            },
+                    'wk = wikked.witch:real_main']
+                },
         )