Avi Caspe focused on modernizing the development environment for the uiua-lang/uiua repository by upgrading its Nix-based toolchain and refreshing key dependencies. Using Nix and advanced dependency management techniques, Avi updated the lockfile to track the latest revisions of crane, flake-parts, and nixpkgs, ensuring that builds remain reproducible and aligned with current best practices. This work reduced drift in both development and CI pipelines, improved security, and supported ongoing maintenance goals. While not user-facing, the changes streamlined onboarding and development workflows, demonstrating a strong grasp of Nix tooling and version pinning within a collaborative open-source project context.