Allow switching between MPI and srun as backends #386

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: OpenMPI

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.9', '3.10', '3.11', '3.12']

	steps:
	- uses: actions/checkout@v4
	- uses: conda-incubator/setup-miniconda@v2
	with:
	python-version: ${{ matrix.python-version }}
	miniforge-variant: Mambaforge
	channels: conda-forge
	channel-priority: strict
	use-mamba: true
	environment-file: .ci_support/environment-openmpi.yml
	- name: Test
	shell: bash -l {0}
	timeout-minutes: 5
	run: \|
	pip install versioneer[toml]==0.29
	pip install . --no-deps --no-build-isolation
	python -m unittest discover tests

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