Local identifiers for python in non tagged builds

.github/workflows/python.yml

@@ -53,7 +53,6 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-
       - name: Install Dependencies
         run: |-
           sudo apt-get update
@@ -97,6 +96,12 @@ jobs:
         run: |-
           ccache -s # Print current cache stats
           ccache -z # Zero cache entry
+
+      - name: Inject local version identifier for non tag builds
+        if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        run: |-
+          echo "PYTHON_LOCAL_VERSION_IDENTIFIER=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+
       - name: setup.py 
         run: |-
           python3 -m pip install wheel
@@ -185,6 +190,11 @@ jobs:
         run: |-
             echo "MACOSX_DEPLOYMENT_TARGET=10.15" >> $GITHUB_ENV
 
+      - name: Inject local version identifier for non tag builds
+        if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        run: |-
+          echo "PYTHON_LOCAL_VERSION_IDENTIFIER=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
+
       - name: setup.py 
         run: |-
           python3 -m pip install --upgrade packaging wheel

setup.py

@@ -136,6 +136,9 @@ def build_extension(self, ext):
 version = None
 with open(os.path.join(here, "lemonade.version")) as f:
     version = f.read().strip()
+    suffix = os.environ.get("PYTHON_LOCAL_VERSION_IDENTIFIER", None)
+    if suffix is not None:
+        version = "{}+{}".format(version, suffix)
 
 
 class UploadCommand(Command):