Worked on the microsoft/vcpkg repository to upgrade and integrate the Libxlsxwriter dependency, focusing on improving build system reliability and downstream reproducibility. Addressed build system configuration using CMake by updating portfile.cmake and adjusting SHA512 checksums to match the new library version. Enhanced dependency management by ensuring proper detection and linking of unofficial-minizip, which reduced runtime errors and improved package stability. Streamlined the build process by removing unnecessary patches and configuration options, such as disabling pkg-config, to minimize configuration drift. The work emphasized build system management and dependency management, resulting in more stable and reproducible builds for downstream projects.