During October 2025, Michael Cook developed and contributed a Homebrew formula for the fennel-ls language server in the gittools-bot/homebrew-core repository. He used Ruby to define build dependencies, installation steps, and automated tests that verify both version output and lint status, ensuring reliable, one-command installation for macOS users. His work focused on build system integration and test-driven verification, streamlining the onboarding process and reducing setup friction for new users. By emphasizing dependency management and robust testing, Michael improved the packaging quality and adoption potential of fennel-ls, delivering a well-structured, maintainable solution within the Homebrew ecosystem.