Worked on the acl2/acl2 repository to enhance the ACL2 theorem proving environment by integrating updates from another branch and introducing new build process scripts. Focused on improving project organization and maintainability, the work included adding customization files and reorganizing existing components to streamline future releases and reduce integration risks. Leveraged skills in Lisp programming, build automation, and theorem proving to align the environment with cross-branch changes, which helped minimize post-merge defects and simplified future integrations. The technical approach emphasized repository organization and environment customization, resulting in a more stable and maintainable build process for ongoing development efforts.