chore: prevent normalization of semver versioning (#45)

When there is a patch version added to semver versioning, setuptools.setup(version) will normalize the versioning from -patch to .patch which is not correct SEMVER versioning. The added feature with setuptools.sic(version) will prevent this from happening.

Author: dandhlee

packages/google-cloud-runtimeconfig/setup.py

@@ -17,6 +17,21 @@
 
 import setuptools
 
+# Disable version normalization performed by setuptools.setup()
+# Adding the workaround to make it compatible for Python2
+try:
+    # Try the approach of using sic(), added in setuptools 46.1.0
+    from setuptools import sic
+except ImportError:
+    # Try the approach of replacing packaging.version.Version
+    sic = lambda v: v
+    try:
+        # setuptools >=39.0.0 uses packaging from setuptools.extern
+        from setuptools.extern import packaging
+    except ImportError:
+        # setuptools <39.0.0 uses packaging from pkg_resources.extern
+        from pkg_resources.extern import packaging
+    packaging.version.Version = packaging.version.LegacyVersion
 
 # Package metadata.
 
@@ -54,7 +69,7 @@
 
 setuptools.setup(
     name=name,
-    version=version,
+    version=sic(version),
     description=description,
     long_description=readme,
     author="Google LLC",