Pieter Degen worked on the tweag/topiary repository, where he enhanced the documentation by adding Homebrew installation instructions for Topiary. He used Markdown to update the package managers section, ensuring that macOS and Linux users could install Topiary via a familiar and streamlined Homebrew workflow. Pieter focused on documentation best practices and cross-platform packaging awareness, aligning the repository with common developer tooling. His contribution reduced setup friction and improved onboarding for new users. The work demonstrated careful attention to version-control discipline and collaborative documentation, resulting in clearer, more accessible instructions without introducing new features or addressing existing bugs.