setup.py

#!/usr/bin/env python
from setuptools import setup
from re import match
import os
import subprocess

def get_git_version():
    '''get a pypi compatible version from git.
       verifies the tag is pypi compatible
       returns None if the tag is not pypi compatible
       converts post tag revisions into 'dev<increment>'
    '''
    regex = '(\d(\.\d+)+((a|b|rc)\d+)?)((-([1-9]\d*)-g[0-9a-f]+)?(-dirty)?)?'
    try:
        version_git = subprocess.check_output(['git', 'describe', '--dirty'])
    except:
        return None

    m = match(regex, version_git)
    if not m:
        return None

    version_pypi = m.group(1)
    if m.group(5):
        post_increment = 0
        try:
            post_increment = int(m.group(7))
        except:
            pass

        version_pypi += '.dev{}'.format(post_increment)
    return version_pypi

def load_version():
    from buildbot_webhook_gogs.version import __version__
    return __version__

def save_version(version):
    version_msg = '''# Do not edit this file, pipeline versioning is governed by git tags
__version__ = '{}'
'''
    version_py = os.path.join(os.path.dirname(__file__), 'buildbot_webhook_gogs', 'version.py')

    with open(version_py, 'w') as fh:
        fh.write(version_msg.format(version))

def cache_git_version():
    version = get_git_version()
    if version:
        save_version(version)
    else:
        version = load_version()
    return version

setup(name='buildbot-webhook-gogs',
      version=cache_git_version(),
      description='Gogs web hook support for buildbot 9.9 and above',
      author='Joshua A Clayton',
      author_email='stillcompiling@gmail.com',
      url='https://github.com/d4ddi0/buildbot-webhook-gogs',
      license='GPLv2',
      packages=['buildbot_webhook_gogs',],
      entry_points={'buildbot.webhooks': 'gogs = buildbot_webhook_gogs:gogs'}
)