Automate releases

Author: ldx

.github/workflows/build.yaml

@@ -3,6 +3,8 @@ on:
   push:
     branches:
       - main
+    tags:
+      - "v*"
   pull_request:
 jobs:
   build-and-test:
@@ -23,10 +25,38 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
     - name: Build package
-      run: python setup.py build
-    - name: Install package
-      run: python setup.py install
+      run: |
+        python -m pip install --upgrade build twine
+        python -m build
+        twine check --strict dist/*
     - name: Install coveralls
       run: sudo pip install coveralls
     - name: Run tests
       run: sudo PATH=$PATH coverage run setup.py test
+
+  release:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+    needs:
+      - build-and-test (3.7)
+      - build-and-test (3.8)
+      - build-and-test (3.9)
+      - build-and-test (3.10)
+      - build-and-test (3.11)
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: "3.x"
+    - name: Build package
+      run: |
+        python -m pip install --upgrade build twine
+        python -m build
+        twine check --strict dist/*
+    - name: Publish package
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_API_TOKEN }}