Various updates to actions. #1

	# Continuous integration tests.

	name: test-meltingpot

	on:
	push:
	branches:
	- main
	paths:
	- '.github/workflows/test-meltingpot.yml'
	- 'meltingpot/**'
	- 'setup.py'
	pull_request:
	branches:
	- main
	paths:
	- '.github/workflows/test-meltingpot.yml'
	- 'meltingpot/**'
	- 'setup.py'
	workflow_dispatch:

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.ref }}
	cancel-in-progress: true

	permissions: read-all

	jobs:
	test-meltingpot:
	name: Test Melting Pot
	runs-on: ${{ matrix.os }}
	env:
	SYSTEM_VERSION_COMPAT: 0 # See https://github.com/actions/setup-python/issues/279.
	timeout-minutes: 120
	strategy:
	fail-fast: ${{ github.event_name != 'workflow_dispatch' }}
	matrix:
	os:
	- macos-11
	- ubuntu-20.04
	python-version:
	- '3.10'
	steps:
	- name: Set up Python
	uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install Python dependencies
	run: \|
	pip install --upgrade pip
	pip install setuptools pytest-xdist
	- name: Install Melting Pot
	run: \|
	pip -vvv install https://github.com/deepmind/meltingpot/archive/${{ github.sha }}.tar.gz
	pip list
	- name: Test Melting Pot
	run: pytest --pyargs meltingpot

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