Skills

Xcode Build Benchmark

Benchmark Xcode clean and incremental builds with repeatable inputs, timing summaries...

Install

npx skills add AvdLee/Xcode-Build-Optimization-Agent-Skill --skill xcode-build-benchmark -g -a claude-code -y
Category
Mobile
Updated
2mo ago
License
MIT
Context cost
Lightabout 1,050 tokens
Runs scripts
Yes, review before use

What it does

Benchmark Xcode clean and incremental builds with repeatable inputs, timing summaries, and timestamped `.build-benchmark/` artifacts. Use when a developer wants a baseline, wants to compare before and after changes, asks to measure build performance, mentions build times, build duration, how long builds take, or wants to know if builds got faster or slower.

Xcode Build Benchmark

Use this skill to produce a repeatable Xcode build baseline before anyone tries to optimize build times.

Core Rules

  • Measure before recommending changes.
  • Capture clean and incremental builds separately.
  • Keep the command, destination, configuration, scheme, and warm-up rules consistent across runs.
  • Write a timestamped JSON artifact to .build-benchmark/.
  • Do not change project files as part of benchmarking.

Inputs To Collect

Confirm or infer:

  • workspace or project path
  • scheme
  • configuration
  • destination
  • whether the user wants simulator or device numbers
  • whether a custom DerivedData path is needed

If the project has both clean-build and incremental-build pain, benchmark both. That is the default.

Worktree Considerations

When benchmarking inside a git worktree, SPM packages with exclude: paths that reference gitignored directories (e.g., __Snapshots__) will cause xcodebuild -resolvePackageDependencies to crash. Create those missing directories before running any builds.

Default Workflow

Read the whole SKILL.md on GitHub

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