Detect dev environment via envvar instead of guessing #13

	name: Run tests

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	test:
	name: Python ${{ matrix.python-version }} on ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false # Don't cancel other jobs if one fails
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	# Python 3.7 is no longer available on the -latest series (except for Windows)
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0 # Needed for git history (tags)

	- uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install test dependencies
	run: \|
	python -m pip install pytest pytest-xdist

	- name: List pip package versions
	run: python -m pip freeze --local

	- name: Run tests
	run: \|
	python -m pytest tests -v -n auto

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