Recognize brew.sh invocations #191

	name: macOS CI

	env:
	# NOTE: This version must match between all .yml files in the
	# .github/workflows directory
	TOX_VERSION: 4.0.9

	on:
	# Triggers the workflow on push or pull request events but only for the main branch
	push:
	branches: [python]
	pull_request:
	branches: [python]

	jobs:
	tox:
	runs-on: macos-12
	steps:
	- name: Check out repository code
	uses: actions/checkout@v4
	with:
	fetch-depth: 0 # For getting tags from the repo
	- name: Cache .tox directory
	uses: actions/cache@v3
	with:
	path: .tox
	key: ${{ runner.os }}-${{ hashFiles('tox.ini') }}
	- name: Create a virtualenv
	run: \|
	python3 -m venv env
	- name: Install tox in our virtualenv
	run: \|
	. ./env/bin/activate
	pip install tox==${{ env.TOX_VERSION }}
	- name: Run tox in our virtualenv
	run: \|
	. ./env/bin/activate

	# Explicitly name environments we think can detect macOS specific problems.
	# All (others) will be run on Linux.
	#
	# The point is to run as little as possible on macOS because macOS runs are
	# slow and expensive, look for "multiplier" on this page:
	# https://docs.github.com/en/billing/managing-billing-for-github-actions/about-billing-for-github-actions
	tox -e version.py,installtest,pytest,package,test-package,test-wheel

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