Niols enhanced the GaloisInc/nixpkgs repository by integrating automated test infrastructure for the TiMIDIty++ package, focusing on improving CI/CD reliability and cross-platform validation. Leveraging the Nix language and package management expertise, Niols embedded tests directly into the package build process using the passthru attribute, enabling seamless end-to-end validation as part of the release lifecycle. The work included enabling multi-architecture test execution across aarch64-linux and x86_64-linux, which expanded coverage and reduced manual testing requirements. By updating system configuration files and test harnesses, Niols laid the foundation for more reproducible builds and robust, automated testing workflows within the project.