add covariance to group #51

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

	name: dev workflow

	# Controls when the action will run.
	on:
	# Triggers the workflow on push or pull request events but only for the master branch
	push:
	branches: [ master, main ]
	pull_request:
	branches: [ master, main ]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# 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 "test"
	test:
	# The type of runner that the job will run on
	strategy:
	matrix:
	python-versions: [3.8, 3.9, "3.10", "3.11"]
	os: [ubuntu-latest, macos-latest, windows-latest]
	runs-on: ${{ matrix.os }}

	# 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-versions }}


	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest

	- uses: jakebailey/pyright-action@v1
	with:
	# 1.1.337 triggers a bunch of possibly spurious errors but eric probably knows better
	version: 1.1.336

	- name: list files
	run: ls -l .

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