Use nix flake check for CI tests #343

	# Copyright 2022 Ross Light
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
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	# https://www.apache.org/licenses/LICENSE-2.0
	#
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	# distributed under the License is distributed on an "AS IS" BASIS,
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	# SPDX-License-Identifier: Apache-2.0

	name: Test
	on:
	push:
	branches:
	- '**'
	pull_request:
	branches:
	- 'main'
	jobs:
	check:
	name: nix flake check
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v4
	- name: Install Nix
	uses: cachix/install-nix-action@v23
	with:
	extra_nix_config: \|
	extra-experimental-features = ca-derivations impure-derivations
	- name: nix flake check
	run: nix flake check

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