chore: add rust-toolchain.toml #107

	on:
	push:
	branches: [main, dev]
	pull_request:

	name: Python data round trips

	jobs:
	test-metadata:
	name: Test Python metadata round trips
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-24.04]
	rust:
	- stable
	python: [ "3.13" ]
	steps:
	- name: Cancel Previous Runs
	uses: styfle/cancel-workflow-action@0.12.1
	with:
	access_token: ${{ secrets.GITHUB_TOKEN }}

	- uses: actions/checkout@v4.2.2
	with:
	token: ${{ secrets.GITHUB_TOKEN }}
	submodules: recursive
	- uses: dtolnay/rust-toolchain@v1
	with:
	toolchain: ${{ matrix.rust }}
	- uses: Swatinem/rust-cache@v2.7.5
	- name: Install the latest version of uv
	uses: astral-sh/setup-uv@v6
	with:
	activate-environment: true
	version: "latest"
	python-version: ${{ matrix.python }}
	- name: run JSON metadata example
	run: \|
	cargo run --example json_metadata --features derive
	- name: run bincode metadata example
	run: \|
	cargo run --example bincode_metadata --features derive
	- name: setup Python and run tests
	run: \|
	uv venv -p ${{ matrix.python }}
	source .venv/bin/activate
	uv pip install -r python/requirements_locked_3_13.txt
	uv pip install python/tskit_glue
	python -m pytest python

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