Use OnceLock instead of OnceCell (#13410) #1225

	name: Documentation
	on:
	push:
	branches:
	- main
	tags:
	# Only match non-prerelease tags.
	- '[0-9]+.[0-9]+.[0-9]'
	workflow_dispatch:

	jobs:
	build:
	if: github.repository_owner == 'Qiskit'
	name: Build
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	with:
	# We need to fetch the whole history so 'reno' can do its job and we can inspect tags.
	fetch-depth: 0

	- uses: actions/setup-python@v5
	name: Install Python
	with:
	# Sync with 'documentationPythonVersion' in 'azure-pipelines.yml'.
	python-version: '3.9'

	- name: Install dependencies
	run: tools/install_ubuntu_docs_dependencies.sh

	- name: Determine GitHub branch name
	run: \|
	# Tags like 1.0.0 and 1.0.0rc1 should point to their stable branch. We do this
	# to reduce the diff in the qiskit/documentation repository between generating
	# the API docs from a tag release versus a workflow_dispatch.
	if [[ $GITHUB_REF_NAME =~ ^([0-9]+\.[0-9]+) ]]; then
	BRANCH_NAME="stable/${BASH_REMATCH[1]}"
	else
	BRANCH_NAME="$GITHUB_REF_NAME"
	fi
	echo "Using branch '${BRANCH_NAME}' for GitHub source code links"
	echo "QISKIT_DOCS_GITHUB_BRANCH_NAME=$BRANCH_NAME" >> $GITHUB_ENV

	- name: Build documentation
	run: tox run -e docs
	- name: Store built documentation artifact
	uses: actions/upload-artifact@v4
	with:
	name: qiskit-docs
	path: \|
	./docs/_build/html/*
	!**/.doctrees
	!**/.buildinfo
	if-no-files-found: error

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