Use proper publish workflow (#328)

* Use proper publish workflow

* Push

* Update flow

* Test output

* Beautiful

* Cute

.github/workflows/publish.yml

@@ -1,36 +1,59 @@
 name: Publish Python Package
 
 on:
-  release:
-    types: [created]
+  push:
+    tags:
+      - "**"
 
 jobs:
-  deploy:
+  build:
     runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.inspect_package.outputs.version }}
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python
-      uses: actions/setup-python@v2
-      with:
-        python-version: '3.8'
-    - uses: actions/cache@v2
-      name: Configure pip caching
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v2
+        with:
+          version: "0.4.12"
+          enable-cache: true
+
+      - name: Set up Python
+        run: uv python install 3.12
+
+      - name: Build package
+        run: uv build
+
+      - name: Inspect package version
+        id: inspect_package
+        run: |
+          version=$(uvx hatchling version)
+          echo "version=$version" >> "$GITHUB_OUTPUT"
+
+      - name: Upload package
+        uses: actions/upload-artifact@v4
+        with:
+          name: package-distributions
+          path: dist/
+
+  pypi-publish:
+    runs-on: ubuntu-latest
+    needs: build
+
+    permissions:
+      id-token: write
+
+    environment:
+      name: pypi
+      url: https://pypi.org/project/mangum/${{ needs.build.outputs.version }}
+
+    steps:
+    - name: Download package
+      uses: actions/download-artifact@v4
       with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-publish-pip-${{ hashFiles('**/setup.py') }}
-        restore-keys: |
-          ${{ runner.os }}-publish-pip-
-    - name: Install dependencies
-      run: |
-        pip install -U -r requirements.txt
-        pip install setuptools wheel twine
-    - name: Run tests
-      run: scripts/test
-    - name: Publish
-      if: success()
-      env:
-        TWINE_USERNAME: __token__
-        TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
-      run: |
-        python setup.py sdist bdist_wheel
-        twine upload dist/*
+        name: package-distributions
+        path: dist/
+
+    - name: Publish distribution 📦 to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1