ci: add GitHub Pages deployment for the documentation #1

	name: Documentation

	on:
	push:
	branches:
	- main
	paths:
	- documentation/**
	- .github/workflows/docs.yml
	workflow_dispatch:

	# mike publishes the built site to the gh-pages branch.
	permissions:
	contents: write

	concurrency:
	group: docs-deploy
	cancel-in-progress: false

	jobs:
	deploy:
	name: Build and deploy
	runs-on: ubuntu-24.04
	steps:
	- name: Clone repository
	uses: actions/checkout@v6
	with:
	# Full history so git-revision-date-localized and mike work.
	fetch-depth: 0

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.x"

	- name: Install documentation dependencies
	run: pip install -r documentation/requirements.txt

	- name: Configure git identity
	run: \|
	git config user.name "github-actions[bot]"
	git config user.email "github-actions[bot]@users.noreply.github.com"

	- name: Deploy with mike
	working-directory: documentation
	run: \|
	version=$(grep -oE "version: '[0-9]+\.[0-9]+" ../meson.build \| grep -oE '[0-9]+\.[0-9]+')
	mike deploy --push --update-aliases "$version" latest
	mike set-default --push latest

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