Worked on the roc-lang/roc repository to improve reliability by hardening Platform Specification Input Validation using Zig. Focused on reducing misconfiguration issues, the developer enhanced error handling to reject absolute paths for platform specifications and provided users with actionable error messages, ensuring correct configuration and guiding them through setup. The approach included gating behavior based on platform build status, which prevented silent failures and reduced downstream troubleshooting. Refactored the validation logic into a clearer, more maintainable module following DRY principles, enabling easier future extensions. Collaborated closely with another contributor to refine messaging and maintainability, emphasizing robust software development practices.