fixup: Revert ci changes

Author: maru-ava

.github/workflows/attach-static-libs.yaml

@@ -43,24 +43,33 @@ jobs:
             target: aarch64-unknown-linux-gnu
           - os: macos-latest
             target: aarch64-apple-darwin
+            pre-build-cmd: echo "MACOSX_DEPLOYMENT_TARGET=13.0" >> "$GITHUB_ENV"
           - os: macos-13
             target: x86_64-apple-darwin
+            pre-build-cmd: echo "MACOSX_DEPLOYMENT_TARGET=13.0" >> "$GITHUB_ENV"
     outputs:
       has_secrets: ${{ steps.check_secrets.outputs.has_secrets }}
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@786fff0690178f1234e4e1fe9b536e94f5433196 #v20
-      - uses: DeterminateSystems/magic-nix-cache-action@565684385bcd71bad329742eefe8d12f2e765b39 #v13
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Run pre-build command
+        if: matrix.pre-build-cmd != ''
+        run: ${{ matrix.pre-build-cmd }}
+
+      # Require Cargo.lock to be up to date and ensure the registry cache is populated
+      - name: Cargo Fetch (run `cargo generate-lockfile` if this fails)
+        run: cargo fetch --locked --verbose
 
       - name: Build for ${{ matrix.target }}
-        working-directory: ffi
-        run: nix build .#firewood-ffi
+        run: cargo build --frozen --profile maxperf --features ethhash,logger --target ${{ matrix.target }} -p firewood-ffi
 
       - name: Upload binary
         uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.target }}
-          path: ffi/result/lib/libfirewood_ffi.a
+          path: target/${{ matrix.target }}/maxperf/libfirewood_ffi.a
           if-no-files-found: error
 
       - name: Check if FIREWOOD_GO_GITHUB_TOKEN is set