# macOS Homebrew Package Analyzer

## Module
Scanner

## Status
IMPLEMENTED

## Description
OS-level analyzer that discovers Homebrew-installed packages by parsing Cellar receipts, producing SBOM components with version, tap source, and installed-on-request metadata.

## Implementation Details
- **Homebrew Analyzer**:
  - `src/Scanner/__Libraries/StellaOps.Scanner.Analyzers.OS.Homebrew/HomebrewPackageAnalyzer.cs` - `HomebrewPackageAnalyzer` discovers Homebrew-installed packages by parsing Cellar receipts, producing SBOM components with version, tap source, and installed-on-request metadata
  - `src/Scanner/__Libraries/StellaOps.Scanner.Analyzers.OS.Homebrew/HomebrewAnalyzerPlugin.cs` - Plugin registration for the Homebrew analyzer

## E2E Test Plan
- [ ] Scan a macOS container image with Homebrew-installed packages and verify packages are discovered from Cellar receipts
- [ ] Verify each discovered package includes version, tap source (e.g., homebrew/core), and installed-on-request status
- [ ] Verify SBOM components are produced with correct PURL format for Homebrew packages
- [ ] Verify packages installed as dependencies (not on-request) are correctly distinguished from explicitly installed packages
- [ ] Verify custom tap packages are correctly attributed to their source tap