Agent Skills: Xcode Build Analyzer

Xcode Build Analyzer

Instructions

Systematically analyze and fix Xcode build errors:

1. Get error summary:

   xcodebuild -project Leavn.xcodeproj -scheme Leavn -destination 'platform=iOS Simulator,name=LeavnTest' build 2>&1 | grep "error:" | cut -d: -f4- | sort -u
   

2. Categorize by type:

   • Import issues: Missing SwiftData, UIKit, etc.
   • Type mismatches: Wrong return types, protocol conformances
   • Actor isolation: @MainActor property access from nonisolated
   • Property wrappers: @ObservedObject on @Observable types
   • Missing types: Deleted files still referenced
   • Binding issues: $var on non-@Bindable types

3. Identify cascade errors:

   • One missing type → 50 errors
   • One @Observable migration → 10 binding errors
   • Find the root cause, fix once

4. Priority fix order:

   • Missing imports (unlock many files)
   • Missing types (cascade fixes)
   • Property wrappers (mechanical fixes)
   • Actor isolation (add nonisolated)
   • Complex type inference (last)

5. Quick wins:

   • Count errors between fixes
   • Commit when 50%+ reduction achieved
   • Disable broken code temporarily if needed

Use this skill when: Build fails with many errors, refactoring breaks build, need systematic error fixing