fix: ensure the pixi default environment is activated #84

	name: deploy-book

	# Only run this when the master branch changes
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	# This job installs dependencies, build the book, and pushes it to `gh-pages`
	jobs:
	deploy-book:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/cache@v4
	with:
	path: /var/lib/apt
	key: apt-cache-v2
	restore-keys: \|
	apt-cache-v2
	- name: Install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y --no-install-recommends \
	curl \
	bzip2 \
	ca-certificates \
	dvipng \
	texlive-fonts-recommended \
	texlive-fonts-extra \
	texlive-latex-extra \
	cm-super
	- name: Checkout repository
	uses: actions/checkout@v5
	with:
	fetch-depth: 200
	fetch-tags: true
	ref: ${{ github.ref }}
	- uses: prefix-dev/[email protected]
	with:
	pixi-version: v0.55.0
	run-install: false
	- run: pixi lock --check

	- name: Install project environment
	run: pixi install --locked

	# Build the page
	- name: Build the book
	run: pixi run build-book

	# Push the book's HTML to github-pages
	- name: GitHub Pages action
	if: github.event_name == 'push' && github.ref == 'refs/heads/main'
	uses: peaceiris/actions-gh-pages@v4
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./docs/_build/html

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