Rithul worked on the ghostty-org/ghostty repository, focusing on stabilizing the build process by enforcing Zig version compatibility. He addressed a recurring issue where differences in Zig toolchain versions caused unpredictable build failures. By implementing a policy that pins the exact Zig major and minor version in the build configuration, Rithul ensured that both CI and local builds became more reproducible and less prone to version drift. This approach, using Zig and build configuration expertise, clarified tooling requirements for contributors, reduced post-merge issues, and accelerated onboarding. The work demonstrated careful attention to build reliability, though it addressed a single targeted problem.