fix: utilize nix for clippy/test/fmt

.github/workflows/rust.yml

@@ -3,9 +3,23 @@ name: Rust
 on: [push, pull_request]
 
 jobs:
-  barretenberg-job:
-    runs-on: ubuntu-latest
+  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@v3
+
       - uses: cachix/install-nix-action@v22
         with:
           nix_path: nixpkgs=channel:nixos-22.11
@@ -15,28 +29,28 @@ jobs:
         with:
           name: barretenberg
 
-      - name: Checkout sources
-        uses: actions/checkout@v3
-
-      # barretenberg#wasm32 is needed by acvm_js crate so we need to build it first 
-      # and ensure it's in $workspace_root/acvm_js/result/bin
-      # so acvm_js build.rs script can pick it up
-      - name: Run `nix build bb`
-        working-directory: ./acvm_js
+      - 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`
+        run: |
+          nix flake check -L
+
+      - name: Export cache from nix store
+        if: steps.nix-store-cache.outputs.cache-hit != 'true'
         run: |
-          nix build -L "github:AztecProtocol/barretenberg?rev=65e651d04c6092cb5ca079cd9e12ed9b5846fa3a#wasm32"
-
-  check_n_test:
-    needs: barretenberg-job
-    name: cargo check & test
-    uses: noir-lang/.github/.github/workflows/rust-test.yml@main
-
-  clippy:
-    needs: barretenberg-job
-    name: cargo clippy
-    uses: noir-lang/.github/.github/workflows/rust-clippy.yml@main
-
-  format:
-    needs: barretenberg-job
-    name: cargo fmt
-    uses: noir-lang/.github/.github/workflows/rust-format.yml@main
+          nix copy --to "file:///tmp/nix-cache?compression=zstd&parallel-compression=true" .#native-cargo-artifacts

flake.nix

@@ -76,13 +76,18 @@
         cargoToml = ./acvm_js/Cargo.toml;
       };
 
+      crateACVMDefinitions = craneLib.crateNameFromCargoToml {
+        cargoToml = ./acvm/Cargo.toml;
+      };
+
+
       sharedEnvironment = {
         # Barretenberg fails if tests are run on multiple threads, so we set the test thread
         # count to 1 throughout the entire project
         #
         # Note: Setting this allows for consistent behavior across build and shells, but is mostly
         # hidden from the developer - i.e. when they see the command being run via `nix flake check`
-        RUST_TEST_THREADS = "1";
+        # RUST_TEST_THREADS = "1";
         BARRETENBERG_BIN_DIR = "${pkgs.barretenberg-wasm}/bin";
       };
 
@@ -99,17 +104,16 @@
       GIT_DIRTY = if (self ? rev) then "false" else "true";
 
       commonArgs = {
-
+        inherit (crateACVMDefinitions) pname version;
         src = pkgs.lib.cleanSourceWith {
           src = craneLib.path {
             path = ./.;
-            # name = "acvm_js";
           };
           filter = sourceFilter;
         };
 
-        # cargoClippyExtraArgs = "--package acvm_js --all-targets -- -D warnings";
-        # cargoTestExtraArgs = "--workspace";
+        cargoClippyExtraArgs = "--package acvm_js --all-targets -- -D warnings";
+        cargoTestExtraArgs = "--workspace";
 
         # We don't want to run checks or tests when just building the project
         doCheck = false;
@@ -131,7 +135,7 @@
       };
 
       # Build *just* the cargo dependencies, so we can reuse all of that work between runs
-      cargoArtifacts = craneLib.buildDepsOnly acvmjsWasmArgs;
+      cargoArtifacts = craneLib.buildDepsOnly commonArgs;
 
       wasm-bindgen-cli = pkgs.callPackage ./acvm_js/nix/wasm-bindgen-cli/default.nix {
         rustPlatform = pkgs.makeRustPlatform {
@@ -143,13 +147,28 @@
     in
     rec {
       checks = {
-        cargo-clippy = craneLib.cargoClippy (acvmjsWasmArgs // {
-          inherit cargoArtifacts
-  ;
+
+        cargo-clippy = craneLib.cargoClippy (commonArgs // sharedEnvironment // {
+          inherit GIT_COMMIT GIT_DIRTY;
+
+          cargoArtifacts = cargoArtifacts;
+          doCheck = true;
+        });
+
+        cargo-test = craneLib.cargoTest (commonArgs // sharedEnvironment // {
+          inherit GIT_COMMIT GIT_DIRTY;
+
+          cargoArtifacts = cargoArtifacts;
+          doCheck = true;
+        });
+
+        cargo-fmt = craneLib.cargoFmt (commonArgs // sharedEnvironment // {
           inherit GIT_COMMIT GIT_DIRTY;
 
+          cargoArtifacts = cargoArtifacts;
           doCheck = true;
         });
+
       };
 
       packages.default = craneLib.mkCargoDerivation (acvmjsWasmArgs // rec {