modernize packaging and tox file #20

	name: Wheels

	on:
	workflow_dispatch:
	pull_request:
	push:
	branches: [ main ]

	jobs:
	build:

	runs-on: ${{ matrix.os }}
	defaults:
	run:
	shell: bash
	env:
	PYTHONIOENCODING: utf-8
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-20.04, macos-latest, windows-latest]
	python-version: [3.6, 3.7, 3.9, '3.10']

	steps:
	- name: Set git crlf/eol
	run: \|
	git config --global core.autocrlf false
	git config --global core.eol lf

	- uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip wheel
	pip install tox tox-gh-actions

	- name: Build dist pkgs
	run: \|
	tox -e build

	- name: Upload artifacts
	if: matrix.python-version == 3.7 && runner.os == 'Linux'
	uses: actions/upload-artifact@v3
	with:
	name: wheels
	path: ./dist/*.whl

	check_artifact:
	name: Check wheel artifact
	needs: [build]
	runs-on: ${{ matrix.os }}
	defaults:
	run:
	shell: bash
	env:
	PYTHONIOENCODING: utf-8
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-20.04, macos-latest, windows-latest]
	python-version: [3.6, 3.8, '3.10']

	steps:
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}

	# download all artifacts to project dir
	- uses: actions/download-artifact@v3

	- name: Check wheel install
	run: \|
	bash -c 'export WHL=$(ls wheels/*.whl); python -m pip install $WHL'
	hexdump --test

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