During April 2025, Knightpp contributed to the hmemcpy/nixpkgs repository by initializing and packaging four Guile-based libraries and tools, including guile-json-rpc and guile-lsp-server. Their work focused on implementing reproducible builds through careful versioning, source fetching, and explicit dependency declarations, all aligned with nixpkgs standards. Using Nix and leveraging expertise in build systems and package management, Knightpp ensured each package included comprehensive metadata for maintainability and traceability. This effort enabled downstream projects to adopt Guile-based tooling more easily within nixpkgs, improving the ecosystem’s consistency and reliability. The work demonstrated depth in system configuration and package lifecycle management.