Fix creating venv on macos with homebrew #66

	# This is a basic workflow to help you get started with Actions

	name: Unit tests

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the master branch
	on:
	push:
	pull_request:
	type: [ "opened", "reopened", "synchronize" ]

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	strategy:
	matrix:
	python-version: [ '3.6', '3.7', '3.8', '3.9' ]

	# The type of runner that the job will run on
	runs-on: ubuntu-20.04

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}

	# Runs a set of commands using the runners shell
	- name: Setup
	run: pip install tox

	- name: Show environment
	run: set

	- name: Test
	run: tox -e py -- -vv

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