[MAINT] Remove conda from CI Linux Workflows #3

	name: Unit tests

	on:
	push:
	branches: ['**']
	pull_request:
	branches: ['**']

	jobs:
	build:

	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	python-version: [3.8,3.9]

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install ubuntu dependencies
	shell: bash -el {0}
	run: \|
	sudo add-apt-repository ppa:ubuntu-toolchain-r/test
	sudo apt-get update
	sudo apt-get install libopenmpi-dev openmpi-bin

	- name: Install dependencies
	shell: bash -el {0}
	run: \|
	python -m pip install --upgrade pip
	python -m pip install mpi4py openmpi
	- name: Install HNN-core
	shell: bash -el {0}
	run: \|
	python -m pip install --verbose '.[opt, parallel, test, gui]'

	- name: Lint with flake8
	shell: bash -el {0}
	run: \|
	flake8 --count hnn_core

	- name: Test with pytest
	shell: bash -el {0}
	run: \|
	python -m pytest ./hnn_core/tests/ --cov=hnn_core --cov-report=xml

	- name: Upload coverage to Codecov
	shell: bash -el {0}
	run: \|
	bash <(curl -s https://codecov.io/bash) -f ./coverage.xml

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