Provide hint when Union type with None may not have been narrowed #1

	name: Test stubgenc on pybind11_fixtures

	on:
	workflow_dispatch:
	push:
	branches: [main, master, 'release*']
	tags: ['*']
	pull_request:
	paths:
	- 'misc/test-stubgenc.sh'
	- 'mypy/stubgenc.py'
	- 'mypy/stubdoc.py'
	- 'mypy/stubutil.py'
	- 'test-data/stubgen/**'

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	stubgenc:
	# Check stub file generation for a small pybind11 project
	# (full text match is required to pass)
	runs-on: ubuntu-latest
	steps:

	- uses: actions/checkout@v4

	- name: Setup 🐍 3.8
	uses: actions/setup-python@v5
	with:
	python-version: 3.8

	- name: Test stubgenc
	run: misc/test-stubgenc.sh

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