build

If the config option `projects` is empty, do not omit any entries. #40

	---
	# NB: this name is used in the status badge
	name: build

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	workflow_dispatch:
	schedule:
	- cron: "0 5 * * 6" # 5:00 UTC every Saturday

	jobs:
	build:
	name: Python ${{ matrix.python-version }}
	runs-on: ubuntu-latest

	strategy:
	matrix:
	python-version:
	- "3.11"
	- "3.12"

	steps:
	- name: Git clone
	uses: actions/checkout@v4

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

	- name: Pip cache
	uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('tox.ini', 'setup.py') }}
	restore-keys: \|
	${{ runner.os }}-pip-${{ matrix.python-version }}-
	${{ runner.os }}-pip-

	- name: Install dependencies
	run: \|
	python -m pip install -U pip
	python -m pip install -U setuptools wheel
	python -m pip install -U tox

	- name: Run tests
	run: tox -e py

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