During October 2025, Lukas Breitwieser focused on improving build-system reliability for the root-project/root repository. He addressed a cross-platform issue in the CMake build configuration by refining how the ROOT_INCLUDE_PATH was set, specifically removing unnecessary quotes around DEFAULT_ROOT_INCLUDE_PATH in CMakeLists.txt. This targeted fix prevented build failures on systems where CMake misinterpreted quoted paths, ensuring consistent environment setup across platforms. Lukas applied his expertise in build system configuration and CMake scripting to resolve the bug, contributing to more robust and predictable builds. While the work was limited in scope, it demonstrated careful attention to platform compatibility and build process integrity.