During November 2024, Scott Cogland focused on improving build reliability for macOS in the spack and spack-packages repositories. He addressed persistent LLVM build failures by correcting sysroot handling and updating SDK paths and compiler flags, ensuring Clang and libc++ compiled successfully on Darwin systems. Working primarily in Python and leveraging expertise in build systems and package management, Scott propagated these fixes across both repositories to standardize macOS build environments. His targeted bug fixes reduced CI failures and improved developer workflows, demonstrating a deep understanding of cross-repository integration and the complexities of macOS development within large-scale open source infrastructure.