Sandaru Kasa contributed to the srid/nixpkgs repository by refactoring the pest-ide-tools package to enhance security and streamline licensing. Over the course of a month, Sandaru replaced the OpenSSL dependency with rustls, reducing external dependencies and improving the security posture of the build system. The work also involved updating licensing metadata to retain only the Apache-2.0 license, ensuring compliance and clarity. Using Nix and leveraging expertise in build systems and package management, Sandaru validated build stability and compatibility after these changes, resulting in a more maintainable and auditable toolchain for the nixpkgs workflow without introducing new bugs.