Worked on the spack/spack-packages repository to enhance build reliability in debug configurations by implementing a feature that checks for the presence of libfmtd during debug builds. This addition introduced a dedicated property to manage libfmtd dependencies, reducing the risk of misconfiguration and improving overall package management. The work was carried out using Python and CMake, with careful attention to maintaining code quality and adhering to established style guidelines. By aligning with the contributor workflow, the developer enabled rapid iteration on build-configuration features, contributing to a more robust and maintainable package management process within the repository’s development cycle.