Improve CI and deploy

.github/workflows/ci.yml

@@ -11,13 +11,14 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
+          persist-credentials: false
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.13'
-          cache: 'pip'
-          cache-dependency-path: 'requirements/*.txt'
+          python-version: "3.13"
+          cache: "pip"
+          cache-dependency-path: "requirements/*.txt"
       - name: Run tox
         id: matrix
         run: |
@@ -38,16 +39,49 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
+          persist-credentials: false
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
-          cache: 'pip'
-          cache-dependency-path: 'requirements/*.txt'
+          cache: "pip"
+          cache-dependency-path: "requirements/*.txt"
       - name: Run tests
-        env:
-          PYTHON_VERSION: ${{ matrix.python }}
         run: |
           pip install $(grep -E "^(tox|tox-uv)==" requirements/local.txt)
           tox -e ${{ matrix.tox_env }}
+      - name: Upload coverage data
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-data-${{ matrix.tox_env }}
+          include-hidden-files: true
+          path: .coverage.*
+          if-no-files-found: ignore
+
+  coverage:
+    name: Coverage
+    runs-on: ubuntu-24.04
+    needs: test
+    if: always()
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+          cache: "pip"
+          cache-dependency-path: "requirements/*.txt"
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: coverage-data-*
+          merge-multiple: true
+      - name: Run coverage
+        run: |
+          pip install $(grep -E "^(tox|tox-uv)==" requirements/local.txt)
+          tox -e coverage
+          tox -qq exec -e coverage -- coverage report --format=markdown >> $GITHUB_STEP_SUMMARY

.github/workflows/publish.yml

@@ -0,0 +1,92 @@
+name: Publish
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  build:
+    name: Build packages
+    runs-on: ubuntu-24.04
+    environment: publish
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+      - name: Build packages
+        run: |
+          pip install -r requirements/testing.txt
+          make package
+      - name: Upload packages
+        uses: actions/upload-artifact@v4
+        with:
+          name: python-package-distributions
+          path: dist/
+          if-no-files-found: error
+
+  publish-to-pypi:
+    name: Publish package on PyPI
+    needs:
+      - build
+    runs-on: ubuntu-24.04
+    environment:
+      name: pypi
+      url: https://pypi.org/project/${{ github.event.repository.name }}/${{ github.ref_name }}/
+    permissions:
+      id-token: write
+
+    steps:
+      - name: Download packages
+        uses: actions/download-artifact@v4
+        with:
+          name: python-package-distributions
+          path: dist/
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+
+  github-release:
+    name: Publish package on GitHub Releases
+    needs:
+      - build
+    runs-on: ubuntu-24.04
+    environment:
+      name: github-releases
+      url: ${{ github.server_url }}/${{ github.repository }}/releases/tag/${{ github.ref_name }}
+    permissions:
+      contents: write
+      id-token: write
+
+    steps:
+      - name: Download packages
+        uses: actions/download-artifact@v4
+        with:
+          name: python-package-distributions
+          path: dist/
+      - name: Sign packages
+        uses: sigstore/[email protected]
+        with:
+          inputs: >-
+            ./dist/*.tar.gz
+            ./dist/*.whl
+      - name: Create GitHub Release
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: >-
+          gh release create
+          "$GITHUB_REF_NAME"
+          --repo "$GITHUB_REPOSITORY"
+          --title "${GITHUB_REPOSITORY#*/} $GITHUB_REF_NAME"
+      - name: Upload artifact signatures to GitHub Release
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: >-
+          gh release upload
+          "$GITHUB_REF_NAME" dist/**
+          --repo "$GITHUB_REPOSITORY"