Worked on the nix-community/home-manager repository to address a reliability issue affecting macOS deployments. Focused on improving LaunchAgent restart behavior by replacing the boolean KeepAlive setting with a SuccessfulExit dictionary, ensuring services only restart after clean exits. This change prevented process accumulation and restart loops, particularly in scenarios where colima startup failed due to disk attachment issues, thereby reducing orphaned limactl processes and resource churn. Demonstrated expertise in Nix package management, macOS development, and system configuration by implementing exit-code based restart logic. The work enhanced maintainability and deployment reliability, directly impacting user experience and lowering ongoing support requirements.