Use Pixi #594

	name: CI

	on:
	workflow_dispatch:
	pull_request:
	push:
	branches:
	- main

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	env:
	# Many color libraries just need this to be set to any value, but at least
	# one distinguishes color depth, where "3" -> "256-bit color".
	FORCE_COLOR: 3

	defaults:
	run:
	shell: bash -el {0}

	jobs:
	style:
	name: Style checks
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- uses: actions/setup-python@v6
	with:
	python-version: "3.13"

	- uses: prefix-dev/setup-pixi@v0.9.4
	with:
	pixi-version: v0.65.0
	cache: true
	cache-write: ${{ github.event_name == 'push' && github.ref_name == 'main' }}
	environments: dev

	- run: pixi run style

	test:
	name: Python Tests ${{ matrix.python-version }} on ${{ matrix.runs-on }}
	runs-on: ${{ matrix.runs-on }}
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.12", "3.13"]
	runs-on: [ubuntu-latest, windows-latest, macos-latest]

	env:
	NUMBA_DISABLE_JIT: "1"
	timeout-minutes: 30

	steps:
	- uses: actions/checkout@v6
	with:
	fetch-depth: 0

	- uses: actions/setup-python@v6
	with:
	python-version: ${{ matrix.python-version }}

	- uses: prefix-dev/setup-pixi@v0.9.4
	with:
	pixi-version: v0.65.0
	cache: true
	cache-write: ${{ github.event_name == 'push' && github.ref_name == 'main' }}
	environments: test

	- run: pixi run test_ci

	- name: Upload Coverage to Codecov
	uses: codecov/codecov-action@v5
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

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