During May 2025, Zach Yu focused on stabilizing the build process for the utmapp/gfxstream repository, addressing a persistent issue affecting macOS integration. He resolved build failures on case-sensitive macOS volumes by correcting a casing typo in the IOKit framework reference within the Bazel build configuration. This targeted bug fix improved the reliability of both CI and local builds, reducing developer friction and ensuring smoother cross-platform development. Zach’s work demonstrated proficiency in Bazel build system configuration, macOS SDK integration, and cross-platform debugging. While no new features were introduced, his efforts enhanced build stability and streamlined the development workflow for the team.