Geoff Goodman refactored the build system for the containers/libkrun repository, focusing on decoupling EFI and GPU feature configuration within the Makefile. By restructuring the build logic, Geoff enabled independent toggling of EFI and GPU support, which previously were interdependent. This change reduced the risk of unintended GPU activation and improved deployment flexibility for users. The work demonstrated proficiency in build system configuration and Makefile scripting, emphasizing modular feature toggles and disciplined change management. Geoff’s approach enhanced maintainability and traceability, allowing for safer experimentation and targeted feature testing, and addressed a nuanced aspect of build system design in containerized environments.