feat: add cython backend (#5)

.github/workflows/ci.yml

@@ -15,10 +15,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
-          python-version: "3.9"
-      - uses: pre-commit/action@v2.0.3
+          python-version: "3.10"
+      - uses: pre-commit/action@v3.0.0
 
   # Make sure commit messages follow the conventional commits convention:
   # https://www.conventionalcommits.org
@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - uses: wagoid/commitlint-github-action@v5
+      - uses: wagoid/commitlint-github-action@v5.3.1
 
   test:
     strategy:
@@ -43,22 +43,29 @@ jobs:
           - "3.11"
         os:
           - ubuntu-latest
-          - windows-latest
           - macOS-latest
+        extension:
+          - "skip_cython"
+          - "use_cython"
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
-      - name: Install poetry
-        run: pipx install poetry
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-          cache: "poetry"
+      - uses: snok/install-poetry@v1.3.3
       - name: Install Dependencies
-        run: poetry install
+        run: |
+          if [ "${{ matrix.extension }}" = "skip_cython" ]; then
+            SKIP_CYTHON=1 poetry install --only=main,dev
+          else
+            poetry install --only=main,dev
+          fi
+        shell: bash
       - name: Test with Pytest
         run: poetry run pytest --cov-report=xml
+        shell: bash
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
         with:
@@ -89,3 +96,75 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           pypi_token: ${{ secrets.PYPI_TOKEN }}
+
+  build_wheels:
+    needs: [release]
+
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - macos-11
+          - ubuntu-20.04
+          - windows-2022
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          ref: "main"
+
+      # Used to host cibuildwheel
+      - name: Set up Python
+        uses: actions/setup-python@v4
+
+      - name: Install python-semantic-release
+        run: python -m pip install python-semantic-release
+
+      - name: Get Release Tag
+        id: release_tag
+        shell: bash
+        run: |
+          echo "::set-output name=newest_release_tag::$(semantic-release print-version --current)"
+
+      - uses: actions/checkout@v3
+        with:
+          ref: "v${{ steps.release_tag.outputs.newest_release_tag }}"
+          fetch-depth: 0
+
+      - name: Install cibuildwheel
+        run: python -m pip install cibuildwheel==2.12.0
+
+      - name: Build wheels
+        run: python -m cibuildwheel --output-dir wheelhouse
+        # to supply options, put them in 'env', like:
+        env:
+          CIBW_SKIP: cp36-* pp36-*
+          CIBW_BEFORE_ALL_LINUX: apt-get install -y gcc || yum install -y gcc || apk add gcc
+          CIBW_BUILD_VERBOSITY: 3
+          REQUIRE_CYTHON: 1
+
+      - uses: actions/upload-artifact@v3
+        with:
+          path: ./wheelhouse/*.whl
+
+  upload_pypi:
+    needs: [build_wheels]
+    runs-on: ubuntu-latest
+    environment: release
+
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          # unpacks default artifact into dist/
+          # if `name: artifact` is omitted, the action will create extra parent dir
+          name: artifact
+          path: dist
+
+      - uses: pypa/gh-action-pypi-publish@v1.5.0
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_TOKEN }}
+
+          # To test: repository_url: https://test.pypi.org/legacy/

build_ext.py

@@ -0,0 +1,35 @@
+"""Build optional cython modules."""
+
+import os
+from distutils.command.build_ext import build_ext
+
+
+class BuildExt(build_ext):
+    def build_extensions(self):  # type: ignore
+        try:
+            super().build_extensions()
+        except Exception:  # nosec
+            pass
+
+
+def build(setup_kwargs):  # type: ignore
+    if os.environ.get("SKIP_CYTHON", False):
+        return
+    try:
+        from Cython.Build import cythonize
+
+        setup_kwargs.update(
+            dict(
+                ext_modules=cythonize(
+                    [
+                        "src/chacha20poly1305_reuseable/__init__.py",
+                    ],
+                    compiler_directives={"language_level": "3"},  # Python 3
+                ),
+                cmdclass=dict(build_ext=BuildExt),
+            )
+        )
+    except Exception:
+        if os.environ.get("REQUIRE_CYTHON"):
+            raise
+        pass