.github/workflows/release: Add releasing action

.github/workflows/release.yml

@@ -0,0 +1,88 @@
+name: PyPI release
+
+# Make a PyPI release.  This action:
+# - builds the release files
+# - checks the tag version matches the source version
+# - releases on PyPI using the action
+#
+# The first time, you have to upload the release yourself to get the
+# API key, to add to gh-secrets.
+#
+# I upload it with:
+#   python setup.py sdist bdist_wheel
+#   twine upload dist/*
+#
+# To configure the secrets, see steps here:
+#   https://github.com/pypa/gh-action-pypi-publish
+#   secret name= pypi_password
+
+
+# If MOD_NAME not defined, infer it from the current directory.  If
+# inferred from the directory, '-' is replaced with '_'.  This is used
+# when checking the version name.
+#env:
+#  MOD_NAME: numpy
+
+on:
+  # For Github release-based publishing
+  #release:
+  #  types: [published]
+  # For tag-based (instead of Github-specific release-based):
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    permissions:
+      contents: read
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      #with:
+      #  python-version: 3.8
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+        pip install twine wheel
+
+    - name: Build
+      run: |
+        python setup.py sdist bdist_wheel
+
+    # Verify that the git tag has the same version as the python
+    # project version.
+    - uses: rkdarst/action-verify-python-version@main
+
+    - uses: actions/upload-artifact@master
+      with:
+        name: dist-directory
+        path: dist/
+
+
+  upload:
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    permissions:
+      id-token: write  # for trusted publishing
+    steps:
+
+    - uses: actions/download-artifact@v3
+      with:
+        name: dist-directory
+        path: dist/
+
+    - name: Publish on PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      #with:
+        #user: __token__
+        #password: ${{ secrets.pypi_password }}
+        #repository_url: https://test.pypi.org/legacy/