William Hai contributed to the srid/nixpkgs repository by upgrading the Cemu emulator package from version 2.0-92 to 2.2, addressing new dependencies and updating build configurations through CMakeLists.txt modifications and patch management. This work improved compatibility with newer libraries and enhanced build reproducibility. William also corrected maintainer metadata, ensuring accurate contact information and clearer project ownership. His efforts demonstrated skills in build system configuration, configuration management, and package management, primarily using Nix and CMake. The depth of his work is reflected in the careful alignment of build processes and metadata, resulting in a healthier, more maintainable repository environment.