Contributed to the hmemcpy/nixpkgs repository by updating and stabilizing the Mixxx package and its dependencies using Nix. Upgraded libdjinterop to version 0.24.3 to meet Mixxx requirements and updated Mixxx itself to the latest stable release, ensuring users have access to recent features and compatibility improvements. Focused on build system reliability by pinning the package to a known-good revision and disabling benchmarks, which reduced build failures and downstream maintenance. Leveraged skills in build systems and package management to deliver a more robust packaging experience, emphasizing maintainability and consistent performance for the Nix-based Mixxx distribution within nixpkgs.