During November 2025, Ciphell modernized the build system for the endless-sky/endless-sky repository by updating scripts to ensure compatibility with CMake 4. This work involved revising dependency management through vcpkg and removing deprecated configuration options, directly addressing a persistent build-script bug. Ciphell’s approach improved the reliability of cross-platform builds and enhanced continuous integration stability, making onboarding smoother for new contributors. The project leveraged CMake, JSON, and YAML for build automation and configuration, resulting in fewer build-time errors and faster iteration cycles. The depth of work focused on foundational infrastructure, emphasizing maintainability and robust dependency handling over feature development.