name: swiftpm-macos description: Build, run, and test pure SwiftPM-based macOS packages and executables. Use when the repo is package-first, when there is no Xcode project, or when Swift package workflows are the fastest path to diagnosis.

SwiftPM for macOS

Quick Start

Use this skill when Package.swift is the primary entrypoint or when SwiftPM is the fastest path to a reproducible result.

Workflow

1. Inspect the package.

   • Read Package.swift.
   • Identify executable, library, and test products.

2. Build with SwiftPM.

   • Use swift build by default.
   • Use release mode only when the user explicitly needs it.

3. Run the right product.

   • Use swift run <product> when an executable exists.
   • If multiple executables exist, explain the default choice.

4. Test narrowly.

   • Use swift test.
   • Apply filters when a specific test target or case is known.

5. Summarize failures.

   • Module/import resolution
   • Package graph or dependency issue
   • Linker failure
   • Runtime failure
   • Test regression

Guardrails

• Prefer SwiftPM over Xcode when both exist and the package path is clearly simpler.
• Do not assume an app bundle exists in a pure package workflow.
• Explain when the package is library-only and therefore not directly runnable.

Output Expectations

Provide:

• the package products you found
• the command you ran
• whether build, run, or test succeeded
• the top blocker if not