Fix CI. #2

	name: Build and run tests
	on: [push]
	jobs:
	build:
	name: Build wheels on ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-20.04]

	steps:
	- uses: actions/checkout@v2
	with:
	submodules: recursive

	- name: Build wheels (pure python)
	run: python setup.py bdist_wheel

	- uses: actions/upload-artifact@v2
	with:
	path: ./dist/*.whl
	run:
	name: Test on ${{ matrix.os }} with python ${{ matrix.python-version }}
	needs: [build]
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-20.04, windows-2019, macos-11]
	python-version: ['3.7', '3.10']

	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	- uses: actions/download-artifact@v2
	with:
	name: artifact
	path: built_wheels

	- name: Install coverage
	run: python -m pip install coverage

	- name: Install calibur
	run: python -m pip install --find-links=./built_wheels calibur

	- name: Run tests
	run: python run_tests.py

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