Add flake8-trio #327

	name: Lint

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

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	schedule:
	- cron: "0 12 * * 6"
	workflow_dispatch:

	jobs:
	lint:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
	with:
	submodules: "true"

	- name: Set up Python 3.9
	uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c
	with:
	python-version: "3.9"

	- name: install prerequisites
	run: \|
	python -m pip install --upgrade pip wheel
	python -m pip install -r ./piped/python/base-requirements/nox.txt

	- name: Lint markup
	run: python -m nox -s verify-markup

	- name: Check spelling
	run: python -m nox -s spell-check

	- name: Lint with flake8
	run: python -m nox -s flake8

	- name: Check slotting
	run: python -m nox -s slot-check

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