chore(ci): fix artifact rebuild script #209

	name: ACVM Rust

	on: [push, pull_request]

	jobs:
	clippy-n-test:
	name: Test on ${{ matrix.os }}
	runs-on: ${{ matrix.runner }}
	timeout-minutes: 30

	strategy:
	fail-fast: false
	matrix:
	include:
	- os: ubuntu
	runner: ubuntu-latest
	target: x86_64-linux

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

	- uses: cachix/install-nix-action@v22
	with:
	nix_path: nixpkgs=channel:nixos-22.11
	github_access_token: ${{ secrets.GITHUB_TOKEN }}

	- uses: cachix/cachix-action@v12
	with:
	name: barretenberg

	- name: Restore nix store cache
	id: nix-store-cache
	uses: actions/cache@v3
	with:
	path: /tmp/nix-cache
	key: ${{ runner.os }}-flake-${{ hashFiles('*.lock') }}

	# Based on https://github.com/marigold-dev/deku/blob/b5016f0cf4bf6ac48db9111b70dd7fb49b969dfd/.github/workflows/build.yml#L26
	- name: Copy cache into nix store
	if: steps.nix-store-cache.outputs.cache-hit == 'true'
	# We don't check the signature because we're the one that created the cache
	run: \|
	for narinfo in /tmp/nix-cache/*.narinfo; do
	path=$(head -n 1 "$narinfo" \| awk '{print $2}')
	nix copy --no-check-sigs --from "file:///tmp/nix-cache" "$path"
	done

	- name: Run `nix flake check`
	working-directory: acvm-repo
	run: \|
	nix flake check -L

	- name: Export cache from nix store
	if: steps.nix-store-cache.outputs.cache-hit != 'true'
	working-directory: acvm-repo
	run: \|
	nix copy --to "file:///tmp/nix-cache?compression=zstd&parallel-compression=true" .#cargo-artifacts

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