fix example and try to build osx binary

Author: brentp

.github/workflows/release.yml

@@ -10,7 +10,19 @@ env:
 
 jobs:
   build-and-release:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            target: x86_64-unknown-linux-gnu
+            binary_name: bedder-static-linux-x86_64
+            use_staticx: true
+          - os: macos-latest
+            target: x86_64-apple-darwin
+            binary_name: bedder-static-macos-x86_64
+            use_staticx: false
+    
+    runs-on: ${{ matrix.os }}
     permissions:
       contents: write  # Required for creating releases
 
@@ -22,6 +34,7 @@ jobs:
       uses: dtolnay/rust-toolchain@stable
       with:
         toolchain: stable
+        targets: ${{ matrix.target }}
 
     - name: Cache cargo registry
       uses: actions/cache@v4
@@ -35,7 +48,8 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-cargo-
           
-    - name: Install system dependencies
+    - name: Install Linux system dependencies
+      if: matrix.os == 'ubuntu-latest'
       run: |
         sudo apt-get update
         sudo apt-get install -y \
@@ -46,26 +60,62 @@ jobs:
           zlib1g-dev \
           pkg-config
           
-    - name: Install staticx
+    - name: Install staticx (Linux only)
+      if: matrix.use_staticx
       run: |
         python3 -m pip install --user staticx
         echo "$HOME/.local/bin" >> $GITHUB_PATH
         
     - name: Build release binary
-      run: cargo build --release
+      run: cargo build --release --target ${{ matrix.target }}
 
-    - name: Create static binary with staticx
+    - name: Create static binary with staticx (Linux)
+      if: matrix.use_staticx
       run: |
-        staticx ./target/release/bedder ./bedder-static-linux-x86_64
-        chmod +x ./bedder-static-linux-x86_64
+        staticx ./target/${{ matrix.target }}/release/bedder ./${{ matrix.binary_name }}
+        chmod +x ./${{ matrix.binary_name }}
+        
+    - name: Create mostly static binary (macOS)
+      if: matrix.os == 'macos-latest'
+      run: |
+        # Copy the binary and rename it
+        cp ./target/${{ matrix.target }}/release/bedder ./${{ matrix.binary_name }}
+        chmod +x ./${{ matrix.binary_name }}
+        
+        # Show dependencies for verification
+        echo "Dependencies for macOS binary:"
+        otool -L ./${{ matrix.binary_name }} || true
         
-    - name: Test static binary
+    - name: Test binary
       run: |
-        ./bedder-static-linux-x86_64 --help || echo "Binary test failed"
-        ldd ./bedder-static-linux-x86_64 || echo "Static binary verified (no dynamic dependencies)"
-        ls -lh ./bedder-static-linux-x86_64
+        ./${{ matrix.binary_name }} --help || echo "Binary test failed"
+        ls -lh ./${{ matrix.binary_name }}
         
-    - name: Create Release and Upload Asset
+        # Platform-specific dependency checks
+        if [[ "${{ matrix.os }}" == "ubuntu-latest" ]]; then
+          ldd ./${{ matrix.binary_name }} || echo "Static binary verified (no dynamic dependencies)"
+        elif [[ "${{ matrix.os }}" == "macos-latest" ]]; then
+          echo "macOS binary dependencies:"
+          otool -L ./${{ matrix.binary_name }} || true
+        fi
+        
+    - name: Upload binary artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{ matrix.binary_name }}
+        path: ${{ matrix.binary_name }}
+
+  release:
+    needs: build-and-release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      
+    steps:
+    - name: Download all artifacts
+      uses: actions/download-artifact@v4
+      
+    - name: Create Release and Upload Assets
       uses: softprops/action-gh-release@v2
       with:
         name: Release ${{ github.ref_name }}
@@ -74,8 +124,11 @@ jobs:
           
           ### Downloads
           - **bedder-static-linux-x86_64**: Static binary for Linux x86_64 (no dependencies required)
+          - **bedder-static-macos-x86_64**: Mostly static binary for macOS x86_64 (minimal system dependencies)
           
           ### Installation
+          
+          #### Linux
           ```bash
           # Download and make executable
           wget https://github.com/${{ github.repository }}/releases/download/${{ github.ref_name }}/bedder-static-linux-x86_64
@@ -85,12 +138,23 @@ jobs:
           sudo mv bedder-static-linux-x86_64 /usr/local/bin/bedder
           ```
           
+          #### macOS
+          ```bash
+          # Download and make executable
+          wget https://github.com/${{ github.repository }}/releases/download/${{ github.ref_name }}/bedder-static-macos-x86_64
+          chmod +x bedder-static-macos-x86_64
+          
+          # Optional: Move to PATH
+          sudo mv bedder-static-macos-x86_64 /usr/local/bin/bedder
+          ```
+          
           ### Binary Info
-          - **Size**: ~6MB
-          - **Dependencies**: None (fully static)
+          - **Linux binary**: Fully static (~6MB, no dependencies)
+          - **macOS binary**: Mostly static (~6MB, minimal system dependencies)
           - **Python**: Works with any Python 3.8+ system
-          - **Architecture**: x86_64 Linux
+          - **Architecture**: x86_64
         files: |
-          bedder-static-linux-x86_64
+          bedder-static-linux-x86_64/bedder-static-linux-x86_64
+          bedder-static-macos-x86_64/bedder-static-macos-x86_64
         draft: false
         prerelease: false 

tests/examples/README.md

@@ -252,6 +252,6 @@ def bedder_vcf_dp(fragment) -> int:
     """return depth (DP) of passing variant"""
     v = fragment.a.vcf() # get the concrete type
     if v.filter != "PASS": return 0
-    dp = v.info("DP")
-    return dp
+    dp = v.info("DP") # this is list of length 1 so we return the first element
+    return dp[0]
 ```