Dio Egizio contributed to the PrismLauncher/PrismLauncher and terrapkg/packages repositories by enhancing build systems and configuration management over a two-month period. He implemented environment-variable-driven branding and configuration in C++ and CMake, introducing dynamic Java path resolution and standardizing environment variables to improve maintainability and flexibility. Dio also improved code readability in Vulkan and OpenGL modules through formatting and documentation updates. In terrapkg/packages, he optimized build dependencies by adding Vulkan headers and removing outdated packages, which streamlined the build process and reduced maintenance overhead. His work focused on build system integration, dependency management, and environment configuration to support reliable development workflows.