Source package version from git

wrappers/python/.gitignore

@@ -9,3 +9,4 @@ wirepas_messaging/gateway/*pb2*.py
 
 Pipfile
 Pipfile.lock
+version.py

wrappers/python/setup.py

@@ -23,6 +23,30 @@
     long_description = f.read()
 
 
+def custom_scheme():
+    def custom_version(version):
+        tag = str(version.tag)
+        if version.exact:
+            return tag
+
+        # split on rc and compute a pre-release tag for the next patch
+        tag_components = tag.rsplit("rc")
+        major, minor, patch = tag_components[0].split(".")
+        patch = int(patch) + 1
+        distance = version.distance
+        tag = f"{major}.{minor}.{patch}.dev{distance}"
+
+        return tag
+
+    return {
+        "root": "../..",
+        "version_scheme": custom_version,
+        "local_scheme": "no-local-version",
+        "write_to": "wrappers/python/version.py",
+        "fallback_version": str(fallback_version["version"]),
+    }
+
+
 def get_list_files(root, flist=None):
     if flist is None:
         flist = list()
@@ -56,9 +80,18 @@ def get_requirements(*args):
 with open(get_absolute_path("./wirepas_messaging/__about__.py")) as f:
     exec(f.read(), about)
 
+fallback_version = {}
+try:
+    with open(get_absolute_path("./version.py")) as f:
+        exec(f.read(), fallback_version)
+except FileNotFoundError:
+    fallback_version["version"] = "0.1.0"
+
+
 setup(
     name=about["__pkg_name__"],
-    version=about["__version__"],
+    use_scm_version=custom_scheme,
+    setup_requires=["setuptools_scm"],
     description=about["__description__"],
     long_description=long_description,
     long_description_content_type="text/markdown",

wrappers/python/wirepas_messaging/__about__.py

@@ -4,6 +4,8 @@
         See file LICENSE for full license details.
 """
 
+from pkg_resources import get_distribution, DistributionNotFound
+
 __author__ = "Wirepas Ltd"
 __author_email__ = "[email protected]"
 __classifiers__ = [
@@ -20,7 +22,6 @@
 __pkg_name__ = "wirepas_messaging"
 __title__ = "Wirepas Messaging Wrappers"
 __url__ = "https://github.com/wirepas/backend-apis/tree/master/wrappers/python"
-__version__ = "1.4.0"
 __warning_msg__ = """
 ***********************************************************************
 * WARNING:
@@ -30,3 +31,9 @@
 *     https://github.com/protocolbuffers/protobuf/tree/master/python
 ***********************************************************************
 """
+
+try:
+    __version__ = get_distribution(__pkg_name__).version
+except DistributionNotFound:
+    # package is not installed
+    pass