[Bug] GraphWorkflow: report cycles as an explicit error instead of silently flattening (#1757 part 1) #4555

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python

	# [ ] TODO [pep 458](https://blog.pypi.org/posts/2024-11-14-pypi-now-supports-digital-attestations/)

	name: Python package

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	jobs:
	build:

	runs-on: ubuntu-latest
	timeout-minutes: 20
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.10", "3.11", "3.12"]

	steps:
	- uses: actions/checkout@v6
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v6
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8 pytest
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	# The tests import swarms, so the package under test has to be installed.
	python -m pip install -e . --no-deps
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Test with pytest
	run: \|
	pytest

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