Update CI/CD pipelines Part 1 #5234

	name: darts PR workflow

	on:
	pull_request:
	branches:
	- master

	jobs:
	tests:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [macos-13]
	python-version: ['3.9']
	flavour: ['all']

	steps:
	- name: "1. Clone repository"
	uses: actions/checkout@v2

	- name: "2. Set up Python ${{ matrix.python-version }}"
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}

	- name: "3. Install dependencies"
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements/dev-all.txt

	- name: "4. Install libomp (for LightGBM)"
	run: \|
	. /.github/scripts/libomp-${{ runner.os }}.sh

	- name: "5. Attach cache for pip"
	uses: actions/cache@v1
	id: cache
	with:
	path: ~/.cache/pip
	key: tests-${{ runner.os }}-${{ matrix.python-version }}-pip-${{ hashFiles('requirements-latest.txt') }}

	- name: "6. Run tests"
	run: \|
	pytest .

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