This PR reflects an old change in the data model, where material identifiers become attributes instead of a list of subnodes. #1048

	# check code types with mypy to be sure the static types are correct and make sense

	name: MyPy Check
	permissions: read-all

	on:
	push:
	branches:
	- main
	- develop
	- trunk-merge/**
	pull_request:
	branches:
	- main
	- develop

	concurrency:
	# github.workflow: name of the workflow
	# github.event.pull_request.number \|\| github.ref: pull request number or branch name if not a pull request
	group: ${{ github.workflow }}-${{ github.event.pull_request.number \|\| github.ref }}

	# Cancel in-progress runs when a new workflow with the same group name is triggered
	cancel-in-progress: true

	jobs:
	mypy-test:
	strategy:
	matrix:
	python-version: [3.12]
	os: [ubuntu-latest]

	runs-on: ${{ matrix.os }}

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

	- name: Check out code
	uses: actions/checkout@v4

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements_dev.txt

	- name: Run MyPy
	run: mypy src/cript/

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