Worked on codebase maintenance for the Saghen/nixpkgs repository, focusing on deprecation cleanup to align with the Blender 4 ecosystem. Addressed compatibility issues by removing unused or unsupported Python packages such as bpycv, boxx, fn, and zcs, which were either deprecated or incompatible with newer Blender releases. Updated package aliases to prevent stale references and streamlined the dependency surface, reducing potential build failures and simplifying future maintenance. Utilized Nix for package management and system administration tasks, documenting all changes and preparing a migration path to support downstream consumers in adapting to the updated environment and ensuring ongoing repository reliability.