Over a two-month period, this developer contributed to open source macOS tooling by building targeted features in Ruby and system administration. In the yairm210/brew repository, they extended Apple Silicon compatibility by adding Apple M4 processor support, updating hardware identifiers in cpu.rb and expanding test coverage for the new 'arm_donan' codename. Later, in gittools-bot/homebrew-core, they integrated the libplacebo library into the ffmpeg-full formula, enhancing video processing performance and visual quality. Their work focused on hardware specification, package management, and testing, demonstrating a methodical approach to improving both system compatibility and multimedia capabilities within Homebrew’s ecosystem.