CI: use Python 3.10 as default version #242

	name: KaTeX pre-rendering

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

	jobs:
	build:

	runs-on: ${{ matrix.os }}
	env:
	node-version: '20.0'
	python-version: '3.10'
	sphinx-version: '5.*'
	katex-version: '0.16.9'
	strategy:
	matrix:
	os: [ ubuntu-latest, windows-latest, macOS-latest ]

	steps:
	- uses: actions/checkout@v3

	- name: Use Node.js ${{ env.node-version }}
	uses: actions/setup-node@v3
	with:
	node-version: ${{ env.node-version }}

	- name: Set up Python ${{ env.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ env.python-version }}

	- name: Prepare KaTeX server
	run: \|
	npm install --global katex@${{ env.katex-version }}

	- name: Set up Sphinx ${{ env.sphinx-version }}
	run: \|
	python -V
	python -m pip install --upgrade pip
	pip install "sphinx==${{ env.sphinx-version }}"
	pip install "jinja2<3.1"

	- name: Tests
	run: \|
	katex -V
	python -m sphinx docs docs/_build/ -b html -W -C -D master_doc=index -D extensions=sphinxcontrib.katex -D katex_prerender=1

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