multiversed 0.3.1

Attribute macros wrapping multiversion with predefined SIMD target presets
Documentation 
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name: Detect CPU Features

on:
  workflow_dispatch:  # Manual trigger
  schedule:
    - cron: '0 0 1 * *'  # Monthly on the 1st

jobs:
  detect-features:
    strategy:
      fail-fast: false
      matrix:
        include:
          # x86_64 runners
          - os: ubuntu-latest
            name: Linux x86_64
          - os: windows-latest
            name: Windows x86_64
          - os: macos-13
            name: macOS x86_64 (Intel)

          # aarch64 runners
          - os: ubuntu-24.04-arm
            name: Linux aarch64
          - os: windows-11-arm
            name: Windows aarch64
          - os: macos-latest
            name: macOS aarch64 (Apple Silicon)

    name: ${{ matrix.name }}
    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@v6

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable

      - name: Build detect-features
        run: cargo build --release -p detect-features

      - name: Run feature detection
        run: cargo run --release -p detect-features

      - name: Save report as artifact
        shell: bash
        run: |
          mkdir -p reports
          cargo run --release -p detect-features > reports/${{ matrix.name }}.txt 2>&1

      - name: Upload report
        uses: actions/upload-artifact@v4
        with:
          name: feature-report-${{ matrix.name }}
          path: reports/

  # wasm32 compile-time check (no runtime detection possible)
  wasm-features:
    name: wasm32 (compile-time)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: wasm32-unknown-unknown

      - name: Build for wasm32 (no SIMD)
        run: cargo build --release -p detect-features --target wasm32-unknown-unknown

      - name: Build for wasm32 (with simd128)
        run: |
          RUSTFLAGS="-C target-feature=+simd128" cargo build --release -p detect-features --target wasm32-unknown-unknown

  # Aggregate reports into summary
  summary:
    name: Generate Summary
    runs-on: ubuntu-latest
    needs: [detect-features]
    steps:
      - name: Download all reports
        uses: actions/download-artifact@v5
        with:
          path: all-reports
          pattern: feature-report-*
          merge-multiple: true

      - name: Display combined report
        run: |
          echo "# CPU Feature Detection Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "Generated on: $(date -u)" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          for f in all-reports/*.txt; do
            if [ -f "$f" ]; then
              name=$(basename "$f" .txt)
              echo "## $name" >> $GITHUB_STEP_SUMMARY
              echo '```' >> $GITHUB_STEP_SUMMARY
              cat "$f" >> $GITHUB_STEP_SUMMARY
              echo '```' >> $GITHUB_STEP_SUMMARY
              echo "" >> $GITHUB_STEP_SUMMARY
            fi
          done

      - name: Upload combined report
        uses: actions/upload-artifact@v4
        with:
          name: all-feature-reports
          path: all-reports/