Developed cross-repository build tooling enhancements for macOS, focusing on package management and language versioning. In gittools-bot/homebrew-core, implemented a complete end-to-end build flow for the Arturo language, addressing dependency orchestration and library handling to ensure reliable builds on macOS. Upgraded the Nim language from version 2.2.4 to 2.2.6 in the macports/macports-ports repository, incorporating updated checksums for secure verification. Leveraged skills in Homebrew formula creation, version control, and macOS development to improve build reproducibility and CI readiness. The work emphasized robust dependency management and security verification, supporting both end-users and continuous integration environments across repositories.