Xcode Build Analyzer

Instructions

Systematically analyze and fix Xcode build errors:

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

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

Identify cascade errors:

• One missing type → 50 errors

• One @Observable migration → 10 binding errors

• Find the root cause, fix once

Priority fix order:

• Missing imports (unlock many files)

• Missing types (cascade fixes)

• Property wrappers (mechanical fixes)

• Actor isolation (add nonisolated)

• Complex type inference (last)

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