[mypyc] fix generator regression with empty tuple (#20371) #5335

	name: Check documentation build

	on:
	workflow_dispatch:
	push:
	branches: [main, master, 'release*']
	tags: ['*']
	pull_request:
	paths:
	- 'docs/**'
	# We now have a docs check that fails if any error codes don't have documentation,
	# so it's important to do the docs build on all PRs touching mypy/errorcodes.py
	# in case somebody's adding a new error code without any docs
	- 'mypy/errorcodes.py'
	# Part of the documentation is automatically generated from the options
	# definitions in mypy/main.py
	- 'mypy/main.py'
	- 'mypyc/doc/**'
	- '*/.rst'
	- '*/.md'
	- CREDITS
	- LICENSE

	permissions:
	contents: read

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

	jobs:
	docs:
	runs-on: ubuntu-latest
	timeout-minutes: 10
	env:
	TOXENV: docs
	TOX_SKIP_MISSING_INTERPRETERS: False
	VERIFY_MYPY_ERROR_CODES: 1
	steps:
	- uses: actions/checkout@v4
	with:
	persist-credentials: false
	- uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	- name: Install tox
	run: pip install tox==4.26.0
	- name: Setup tox environment
	run: tox run -e ${{ env.TOXENV }} --notest
	- name: Test
	run: tox run -e ${{ env.TOXENV }} --skip-pkg-install

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