Worked on improving build reliability for macOS in the bazelbuild/rules_rust repository by addressing a key bug in the target triple parsing logic. Updated the build system configuration to map 'darwin' to 'macos', aligning with Rust’s naming conventions and preventing misconfiguration during conditional compilation and toolchain selection. This change reduced onboarding friction for macOS developers and minimized cross-platform build issues, leading to more stable CI results. Demonstrated skills in cross-platform development and debugging by integrating external conventions into repository logic. Utilized Bzl for build system scripting, focusing on maintainability and consistency across different operating systems in the build process.