Publish experimental wheels for Pyodide

.github/workflows/wheels.yml

@@ -164,6 +164,49 @@ jobs:
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           packages-dir: wheelhouse/
+  build_emscripten:
+    name: Build wheels for Pyodide (Emscripten)
+    runs-on: ubuntu-latest
+    environment: release
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        name: Install Python
+        with:
+          python-version: '3.12'
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-emscripten
+          components: rust-src
+      - name: Install cibuildwheel
+        run: |
+          python -m pip install cibuildwheel==4.1.0
+      - name: Build wheels
+        run: |
+          python -m cibuildwheel --platform pyodide --output-dir wheelhouse
+        env:
+          CIBW_BUILD: cp314-pyodide_wasm32
+          CIBW_BUILD_VERBOSITY: 3
+      - uses: actions/upload-artifact@v4
+        with:
+          path: ./wheelhouse/*.whl
+          name: wheel-builds-emscripten
+  upload_emscripten:
+    name: Upload wheels for Pyodide (Emscripten)
+    runs-on: ubuntu-latest
+    environment: release
+    permissions:
+      id-token: write
+    needs: ["build_emscripten", "upload_shared_wheels"]
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: wheel-builds-emscripten
+          path: wheelhouse
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: wheelhouse/
   build-win32-wheels:
     name: Build wheels on win32
     runs-on: windows-latest

docs/source/install.rst

@@ -171,7 +171,7 @@ Tier Experimental
 -----------------
 
 Tier Experimental platforms are not tested upstream as part of the development process.
-Pre-compiled binaries are built by the external community in separate repositories. Not all of rustworkx might compile for
+Pre-compiled binaries are built and published to PyPI as part of the release process. Not all of rustworkx might compile for
 platforms of this tier and features can be removed. Often, platforms in this tier use unstable features
 from the Rust compiler and might break at any time. Support for these platforms are best effort only.
 

releasenotes/notes/pyodide-pypi-wheels-06f63330094bac2b.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Experimental Pyodide wheels are now published to PyPI. These wheels use the
+    ``pyemscripten`` platform tag defined by `PEP 783 <https://peps.python.org/pep-0783/>`__,
+    allowing compatible Pyodide environments to install ``rustworkx`` from PyPI.
+    Pyodide support remains best effort.