Use different mpi implementation to test for this #1309

	name: "Serial tests"

	on: [push]

	jobs:
	build:
	strategy:
	matrix:
	os: [macos-latest, ubuntu-latest, windows-latest]
	runs-on: ${{ matrix.os }}
	timeout-minutes: 60

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'

	- name: Setup FFmpeg
	uses: AnimMouse/setup-ffmpeg@v1

	- name: Install dependencies
	# install all requirements
	run: \|
	python -m pip install --upgrade pip
	pip install -r tests/requirements_full.txt
	pip install -r tests/requirements.txt

	- name: Run serial tests with pytest
	env:
	NUMBA_WARNINGS: 1
	MPLBACKEND: agg
	run: \|
	cd scripts
	python run_tests.py --unit --runslow --num_cores auto --showconfig

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