ci: build the pure-Python (py3-none-any) wheel as a pinned-artifact f… #1

	name: Pure-Python wheel (wasm/Pyodide)

	# Builds the VPYTHON_PURE_PYTHON=1 wheel (py3-none-any) that Pyodide/micropip
	# and other wasm targets can install — they cannot use platform wheels.
	# Consumers (e.g. trinket) pin the artifact by URL + sha256; a GitHub release
	# gets the wheel attached automatically so pins survive artifact expiry.

	on:
	workflow_dispatch:
	push:
	branches: [master, pyodide-packaging]
	release:
	types: [published]

	jobs:
	pure-wheel:
	runs-on: ubuntu-latest
	permissions:
	contents: write # needed only for the release-asset upload step
	steps:
	- uses: actions/checkout@v7
	with:
	fetch-depth: 0 # setuptools_scm-style dev versions need history

	- uses: actions/setup-python@v6
	with:
	python-version: "3.12"

	- name: Build pure wheel
	run: \|
	pip install build
	VPYTHON_PURE_PYTHON=1 python -m build --wheel --outdir dist
	ls -l dist

	- name: Verify wheel is py3-none-any and imports
	run: \|
	python - <<'EOF'
	import glob, sys
	w = glob.glob('dist/*.whl')
	assert w and w[0].endswith('py3-none-any.whl'), f"not a pure wheel: {w}"
	print("pure wheel:", w[0])
	EOF
	pip install dist/*.whl
	python -c "import vpython; print('import ok', vpython.__version__)"

	- name: Checksum
	run: shasum -a 256 dist/*.whl \| tee dist/SHA256SUMS

	- uses: actions/upload-artifact@v4
	with:
	name: vpython-pure-wheel
	path: dist/

	- name: Attach wheel to release
	if: github.event_name == 'release'
	env:
	GH_TOKEN: ${{ github.token }}
	run: gh release upload "${{ github.event.release.tag_name }}" dist/*.whl dist/SHA256SUMS --clobber

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