Developed and packaged the world-wall-clock application in the Saghen/nixpkgs repository, focusing on initializing version 0.1.4 for deployment. Defined a reproducible build process for this Python-based terminal user interface, which displays clocks for multiple time zones directly in the terminal. Leveraged Nix and packaging expertise to specify Python dependencies and distribution metadata, ensuring reliable downstream distribution and deployment readiness. The work emphasized reproducibility and maintainability, enabling consistent builds across environments. No major bug fixes were reported during this period, with efforts concentrated on feature delivery and robust packaging. The project demonstrates proficiency in Nix, packaging workflows, and Python integration.