CI without cibuildwheel

CI without cibuildwheel#

If you don’t use cibuildwheel, you can set up GitHub Actions (or any CI) to build Pyodide wheels directly with pyodide build.

GitHub Actions workflow#

# .github/workflows/pyodide.yml
name: Build Pyodide wheel

on:
  push:
    tags: ["v*"]
  pull_request:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - uses: actions/setup-python@v5
        with:
          python-version: "3.14"

      - uses: actions/setup-node@v4
        with:
          node-version: "24"

      - name: Install pyodide-build
        run: pip install pyodide-build

      - name: Build wheel
        run: pyodide build .

      - name: Test wheel
        run: |
          pyodide venv .venv-pyodide
          source .venv-pyodide/bin/activate
          pip install dist/*.whl
          pip install pytest
          python -m pytest tests/ -x

      - uses: actions/upload-artifact@v7
        with:
          name: pyodide-wheel
          path: dist/*.whl

Caching the cross-build environment#

The cross-build environment and Emscripten SDK are downloaded on first use and can be large.

You can set the path where the cross-build environment and Emscripten SDK are stored using the PYODIDE_XBUILDENV_PATH environment variable.

Cache them to speed up subsequent runs:

      - name: Setup PYODIDE_XBUILDENV_PATH
        run: echo "PYODIDE_XBUILDENV_PATH=/somewhere-you-want-to-store-xbuildenv" >> $GITHUB_ENV
      - name: Cache xbuildenv
        uses: actions/cache@v4
        with:
          path: |
            ${{ env.PYODIDE_XBUILDENV_PATH }}
          key: pyodide-xbuildenv-${{ hashFiles('**/pyproject.toml') }}
          restore-keys: |
            pyodide-xbuildenv-

Place this step before the “Build wheel” step.

Passing build options#

Pass options the same way you would locally:

      # Meson project
      - name: Build wheel
        run: pyodide build . -Csetup-args=-Dsome-option=value

      # Custom export mode
      - name: Build wheel
        run: pyodide build . --exports pyinit

Publishing#

Add a publish job that runs on tags:

  publish:
    needs: build
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
    permissions:
      id-token: write
    steps:
      - uses: actions/download-artifact@v4
        with:
          name: pyodide-wheel
          path: dist/
      - uses: pypa/gh-action-pypi-publish@release/v1

See also Python Packaging User Guide for more information on publishing packages.

What’s next?#