Single source the package version via Git tags

.gitignore

@@ -122,4 +122,5 @@ venv.bak/
 dmypy.json
 
 # Pyre type checker
-.pyre/
+.pyre/
+_version.py

minpair/__init__.py

@@ -1,3 +1,9 @@
-__version__ = '0.1.0'
-
 from .minpair import *
+
+__all__ = ['__version__']
+try:
+    from ._version import version as __version__
+except ImportError:
+    # broken installation, we don't even try
+    # unknown only works because we do poor mans version compare
+    __version__ = 'unknown'

setup.py

@@ -1,7 +1,7 @@
-import os
-from setuptools import find_packages, setup
 from io import open
 from minpair import __version__
+from setuptools import find_packages, setup
+import os
 
 with open("README.md") as readme_file:
     long_description = readme_file.read()
@@ -28,5 +28,8 @@
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3.7",
     ],
-    install_requires=install_requires
+    install_requires=install_requires,
+    use_scm_version={"version_scheme": "post-release",
+                     "write_to": "minpair/_version.py", },
+    setup_requires=["setuptools_scm"],
 )