fancy --version that includes git branch and timestamp of last commit if available

setup.py

@@ -3,8 +3,27 @@
 import setuptools
 import glob
 
+VERSION_BYTES = b'0.2'
+
+def full_version_bytes():
+    import subprocess, time
+    try:
+        git_branch = subprocess.check_output(['git', 'symbolic-ref', '--short', 'HEAD'])
+        t_bytes = subprocess.check_output(['git', 'log', '-1', '--pretty=format:%ct'])
+        t = int(t_bytes.strip().decode('utf-8'))
+        tm = time.gmtime(t)
+        timestamp_utc = time.strftime("%Y%m%d%H%M%S", time.gmtime(t))
+        return VERSION_BYTES + b'-' + git_branch.strip() + b'-' + timestamp_utc.encode('utf-8')
+    except subprocess.CalledProcessError:
+        return VERSION_BYTES
+
+version_bytes = full_version_bytes()
+with open('umbra/version.txt', 'wb') as out:
+    out.write(version_bytes)
+    out.write(b'\n');
+
 setuptools.setup(name='umbra',
-        version='0.1',
+        version=version_bytes.decode('utf-8'),
         description='Browser automation via chrome debug protocol',
         url='https://github.com/internetarchive/umbra',
         author='Eldon Stegall',
@@ -12,9 +31,9 @@ setuptools.setup(name='umbra',
         long_description=open('README.md').read(),
         license='Apache License 2.0',
         packages=['umbra'],
-        package_data={'umbra':['behaviors.d/*.js']},
+        package_data={'umbra':['behaviors.d/*.js', 'version.txt']},
         install_requires=['kombu', 'websocket-client-py3==0.13.1','argparse'],
-        scripts=glob.glob("bin/*"),
+        scripts=glob.glob('bin/*'),
         zip_safe=False,
         classifiers=[
             'Development Status :: 3 - Alpha Development Status',