Else contributed to the srid/nixpkgs and hmemcpy/nixpkgs repositories by upgrading the Polars Python package and refactoring CUDA package compatibility reporting. Their work involved updating Nix build systems and dependency management to support new package versions, improve testing coverage, and ensure reliable builds. In hmemcpy/nixpkgs, Else enhanced CUDA platform validation and governance by refining platform restriction logic and updating ownership structures, reducing evaluation errors and streamlining review processes. Additionally, Else improved documentation in NixOS/nix, clarifying system feature dependencies for experimental features. Their contributions demonstrated depth in Nix, Rust, and system packaging, focusing on stability, maintainability, and onboarding clarity.