Nicoo focused on package management and scripting within the Nix ecosystem, contributing to both srid/nixpkgs and Saghen/nixpkgs repositories. In srid/nixpkgs, Nicoo automated Factorio dependency updates using Nix and custom scripting, ensuring users had access to the latest stable and experimental releases while maintaining reproducibility and simplifying future upgrades. Later, in Saghen/nixpkgs, Nicoo upgraded the oculante package, carefully updating fetch and cargo hashes to preserve build integrity. When a thumbnail test regression emerged, Nicoo documented the issue and implemented a temporary test skip to maintain CI stability, demonstrating a methodical approach to risk mitigation and ongoing maintenance.