macos build works in CI

.github/workflows/main.yml

@@ -10,13 +10,34 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
-
-    runs-on: ubuntu-latest
+  # Job for building on macOS (with Metal)
+  build-macos:
+    runs-on: macos-latest
 
     steps:
-    - uses: actions/checkout@v4
-    - name: Build
-      run: cargo build
-    - name: Run tests
-      run: cargo test
+      - uses: actions/checkout@v4
+      - name: Setup Python virtual environment
+        shell: bash
+        run: |
+          python3 -m venv .venv
+          source .venv/bin/activate
+          python3 -m pip install --upgrade pip
+          python3 -m pip install huggingface-hub
+      - name: Login to HuggingFace Hub
+        env:
+          HF_TOKEN: ${{ secrets.HUGGINGFACE_TOKEN }}
+        run: |
+          source .venv/bin/activate
+          if [ -n "$HF_TOKEN" ]; then
+            echo "Logging into Hugging Face Hub..."
+            huggingface-cli login --token $HF_TOKEN
+          else
+            echo "No HuggingFace token found, skipping login"
+          fi
+      - uses: oven-sh/setup-bun@v2
+      - run: bun install
+      - name: Build (macOS - Metal)
+        # The `metal` feature will be automatically picked up due to target_os = "macos" in Cargo.toml
+        run: cargo build --release
+      - name: Run tests (macOS)
+        run: cargo test