Use meson as the default build system #436

	name: Run tests

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

	jobs:
	build-and-test:

	runs-on: ubuntu-latest
	env:
	USE_BLAS: mkl
	strategy:
	matrix:
	python-version: ["3.10", "3.11", "3.12"]

	steps:
	- uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- uses: actions/checkout@v3

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install fortran
	run: \|
	sudo apt install -y gfortran intel-mkl meson libopenblas-dev

	- name: Install python dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pyscf
	pip install flake8 pytest
	pip install -r requirements.txt

	- name: Install ccpy
	run: \|
	python -m pip install --verbose --no-build-isolation --editable .

	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	echo "Pass flake8"
	#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: Short test
	run: \|
	pytest tests -v -m short
	if: github.event_name == 'pull_request'

	- name: Full test
	run: \|
	pytest tests -v
	if: github.event_name != 'pull_request'

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