Worked on enhancing the macOS build process in the tuist/tuist repository by introducing a new mechanism for embedding built products within Copy Files phases. Leveraging Swift and Xcode, implemented the CopyFileElement.buildProduct feature to streamline product integration during builds. Addressed macOS-specific output path collisions by ensuring the Swift macro copy phase executes correctly for macOS targets, which improved build reliability and reduced CI flakiness. Collaborated across CLI and build tooling components to strengthen cross-team maintainability. These efforts focused on build system management, resulting in more efficient developer feedback loops and a more stable build environment for macOS development workflows.