ci: update actions and use attic-cache #311

	name: Check and Build configuration

	on:
	push:

	jobs:
	check:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Replace .cry files with some bollocks
	run: find . -name "*.cry" -execdir bash -c 'echo some bollocks > {}' \;

	- name: Install Nix
	uses: DeterminateSystems/nix-installer-action@v4
	with:
	extra-conf: \|
	experimental-features = nix-command flakes

	- name: Setup Nix cache
	uses: DeterminateSystems/magic-nix-cache-action@v2

	- name: Run nix flake check
	run: nix flake check

	- name: Check with DeterminateSystems/flake-checker-action
	uses: DeterminateSystems/flake-checker-action@v5
	with:
	ignore-missing-flake-lock: false

	build:
	needs: check
	runs-on: ubuntu-latest
	strategy:
	matrix:
	host:
	- koumakan
	- satori

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Install Nix
	uses: DeterminateSystems/nix-installer-action@v10
	with:
	extra-conf: \|
	fallback = true # why is this not the default?
	connect-timeout = 30
	netrc-file = /etc/nix/netrc
	experimental-features = nix-command flakes

	- name: Setup attic cache
	uses: ryanccn/attic-action
	with:
	endpoint: https://nonbunary.soopy.moe
	cache: gensokyo-systems
	token: ${{ secrets.ATTIC_TOKEN }}
	skip-push: ${{ github.event_name == 'pull_request' }}

	- name: Build configuration
	run: nix build .#nixosConfigurations."${{ matrix.host }}".config.system.build.toplevel

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