weakref to enable gc + setting children with iterable + fix loading state via jupyter.widget.control + fix various tooltips #1539

	name: Build jupyterlab_widgets

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

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Install Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.8'
	architecture: 'x64'

	- name: Cache pip on Linux
	uses: actions/cache@v3
	if: startsWith(runner.os, 'Linux')
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ matrix.python }}-${{ hashFiles('**/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-${{ matrix.python }}

	- name: Install build dependencies
	run: \|
	python -m pip install jupyterlab jupyter_packaging~=0.10

	- name: Install node dependencies
	run: \|
	jlpm

	- name: Build node packages
	run: \|
	jlpm build

	- name: Install jupyterlab_widgets
	run: \|
	cd python/jupyterlab_widgets
	pip install -vv -e . --no-deps

	- name: Install widgetsnbextension
	run: \|
	cd python/widgetsnbextension
	pip install -vv -e . --no-deps

	- name: Install ipywidgets
	run: \|
	cd python/ipywidgets
	pip install -vv . --no-deps

	- name: Install development extension
	run: \|
	cd python/jupyterlab_widgets
	jupyter labextension develop . --overwrite

	- name: List labextensions
	run: \|
	jupyter labextension list

	- name: Run JupyterLab browser check
	run: \|
	python -m jupyterlab.browser_check

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