Bump actions/download-artifact from 3 to 4 in /.github/workflows #134

	name: Build

	on:
	push:
	branches: main
	pull_request:
	branches: '*'

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Base Setup
	uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1

	- name: Install dependencies
	run: python -m pip install -U "jupyterlab>=3.0,<4.0"

	- name: Build the extension
	run: \|
	set -eux
	python -m pip install .

	jupyter labextension list
	jupyter labextension list 2>&1 \| grep -ie "@robostack/jupyter-ros.*OK"

	npx playwright install
	python -m jupyterlab.browser_check

	- name: Package the extension
	run: \|
	set -eux
	pip install hatch
	python -m hatch build
	pip uninstall -y jupyros jupyterlab

	- name: Upload extension packages
	uses: actions/upload-artifact@v4
	with:
	name: extension-artifacts
	path: dist/jupyros*
	if-no-files-found: error

	test_isolated:
	needs: build
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Install Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.10'
	architecture: 'x64'
	- uses: actions/download-artifact@v4
	with:
	name: extension-artifacts
	- name: Install and Test
	run: \|
	set -eux
	# Remove NodeJS, twice to take care of system and locally installed node versions.
	sudo rm -rf $(which node)
	sudo rm -rf $(which node)
	pip install "jupyterlab>=3.0,<4.0" jupyros*.whl

	jupyter labextension list
	jupyter labextension list 2>&1 \| grep -ie "@robostack/jupyter-ros.*OK"
	python -m jupyterlab.browser_check --no-chrome-test

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