Initialize `flake.nix` #6

	name: Nix Flake Checks
	on:
	pull_request:
	branches:
	- main
	concurrency:
	group: ${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	permissions: read-all

	jobs:
	# Contains checks for not only nix flake errors but also the rust derivations
	# built by the flake, e.g. cargo fmt, cargo deny check, cargo audit, etc.
	#
	# This can be extended, and these checks and their tools are available locally.
	nix-flake-check:
	name: Nix Flake Check
	runs-on: ubuntu-latest
	permissions:
	id-token: "write"
	contents: "read"
	steps:
	- name: Free Disk Space (Ubuntu)
	uses: jlumbroso/free-disk-space@main
	with:
	tool-cache: true
	- uses: actions/checkout@v4
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- uses: DeterminateSystems/flake-checker-action@main
	- run: nix flake check --keep-going -L

	nix-flake-devShell-check:
	name: Nix devShell Check
	runs-on: ubuntu-latest
	permissions:
	id-token: "write"
	contents: "read"
	steps:
	- uses: actions/checkout@v4
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- run: nix develop

	nix-flake-fmt-check:
	name: Nix Format Check
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- run: nix fmt --accept-flake-config -- --check .

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