Mark as xfail for old matplotlib #17

	name: black

	on: push

	defaults:
	run:
	shell: bash

	jobs:
	black:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	with:
	ref: ${{ github.head_ref }}

	- name: Installing black
	run: \|
	sudo apt update -y
	sudo apt -y install python3-pip python3-setuptools python3-wheel
	pip3 install black[jupyter]

	- name: Version
	run: \|
	python3 --version
	$HOME/.local/bin/black --version

	- name: Run black
	run: \|
	$HOME/.local/bin/black . $(grep '^#!./bin/.python.*$' . -Ir\|cut -d: -f1)

	- uses: stefanzweifel/git-auto-commit-action@v4
	with:
	commit_message: "Apply black changes"

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