In April 2025, N.M. Moral enhanced the mdspan header emulation features across the spack and spack-packages repositories, focusing on build system configuration and package management using Python and CMake. Moral introduced a new build variant that enables installation of emulated standard library headers for stable mdspan releases, streamlining downstream adoption and reducing the need for patching. The implementation involved updating packaging logic to pass the variant through CMake and conditionally define installation behavior, ensuring portability and consistency across repositories. This work improved user workflows for deploying environments that rely on stdheaders emulation, demonstrating depth in cross-repository integration.