Build Debugging

Overview

Check dependencies BEFORE blaming code. Core principle 80% of persistent build failures are dependency resolution issues (CocoaPods, SPM, framework conflicts), not code bugs.

Example Prompts

These are real questions developers ask that this skill is designed to answer:

1. "I added a Swift Package but I'm getting 'No such module' errors. The package is in my Xcode project but won't compile."

→ The skill covers SPM resolution workflows, package cache clearing, and framework search path diagnostics

2. "The build is failing with 'Multiple commands produce' the same output file. How do I figure out which files are duplicated?"

→ The skill shows how to identify duplicate target membership and resolve file conflicts in build settings

3. "CocoaPods installed dependencies successfully but the build still fails. How do I debug CocoaPods issues?"

→ The skill covers Podfile.lock conflict resolution, linking errors, and version constraint debugging