Worked on the sbt/zinc repository to address a core issue in incremental compilation cycle management, focusing on improving reliability when pipelining is disabled. Delivered a targeted fix by introducing explicit control over cycle registration through a new parameter, shouldRegisterCycle, in key methods such as mergeAndInvalidate and completeCycle. Expanded the test suite to validate compilation cycle counts across various pipelining configurations, ensuring correctness and reducing build flakiness. Utilized Java and Scala to implement these changes, drawing on expertise in build tools, compiler internals, and testing. The work enhanced the stability and predictability of Zinc’s incremental compilation process.