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BytesAgain › Skills › Xcode Build Analyzer
🦀 ClawHub

Xcode Build Analyzer

by @alexissan

Analyze Xcode build logs — timing, warnings, errors, slow compiles, and build history from DerivedData.

Versionv1.2.0
Installs3
#writing#legal#education
📋 Tips & Best Practices

  • LogStoreManifest.plist is the fastest way to get build history — no decompression needed
  • xcactivitylog files are gzip-compressed SLF (Structured Log Format); use gunzip -c + strings for quick extraction
  • Core Data timestamps: seconds since 2001-01-01 (+ 978307200 to convert to Unix epoch)
  • Build logs are kept until DerivedData is cleaned — Xcode may prune very old logs
  • The highLevelStatus field: S = success, W = warnings, E = errors
  • TaskMetrics wcDuration is in microseconds; maxRSS is in bytes
  • All operations are read-only — never modify DerivedData while Xcode is running

    • View on ClawHub
    TERMINAL
    clawhub install xcode-build-analyzer

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