generate a multi-level PyPi index as per PEP 503 #9

	name: Test index generator

	on:
	pull_request: {}
	push:
	branches:
	- main

	jobs:
	test-index-generator:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	# Setup Python 3.9.x because the test scrpt uses Python 3.9 currently since the Python interpreter's version must match
	# the Python version required by Pants version used for the test (or else Pip will fail to install Pants).
	- uses: actions/setup-python@v5
	with:
	python-version: '3.9'

	- name: Generate and test Pants PyPi index
	run: "./test_generated_index.sh output"
	env:
	GH_TOKEN: ${{ github.token }}

	# Store the generated HTML as an artifact for later inspection.
	- uses: actions/upload-artifact@v4
	with:
	name: generated-output
	path: output/public/
	if-no-files-found: error

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