CI: fix publishing of PyPI package #288

	name: Sphinx

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:

	runs-on: ubuntu-latest
	env:
	python-version: '3.10'
	strategy:
	matrix:
	sphinx-version: [ '5.3.0', '6.2.1', '7.*' ]

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python ${{ env.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ env.python-version }}

	- name: Set up Sphinx ${{ matrix.sphinx-version }}
	run: \|
	python -V
	python -m pip install --upgrade pip
	pip install -r tests/requirements.txt
	pip install "sphinx==${{ matrix.sphinx-version }}"

	- name: Tests
	run: \|
	python -m sphinx tests tests/_build/ -b html -W -C -D master_doc=index -D extensions=sphinxcontrib.katex
	python -m sphinx tests tests/_build/ -c docs/ -b latex -W

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