I/O: YAML, SIF, Excel export and the Standard-GEM git layout #3

	name: CI

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

	# A push that obsoletes a previous run cancels it.
	concurrency:
	group: ci-${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	lint:
	name: ruff
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	cache: pip
	cache-dependency-path: pyproject.toml
	- run: pip install --upgrade pip
	- run: pip install ruff
	- run: ruff check .

	test:
	name: pytest (py${{ matrix.python }})
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python: ["3.11", "3.12", "3.13"]
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python }}
	cache: pip
	cache-dependency-path: pyproject.toml
	- run: pip install --upgrade pip
	# ``-e .[dev,plotting,excel]`` so every optional extra is exercised.
	# Gurobi is not installable on free runners; the relevant tests
	# skip themselves when ``optlang.gurobi_interface`` cannot import.
	- run: pip install -e ".[dev,plotting,excel]"
	- run: pytest -q --maxfail=5 --durations=20

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