During March 2025, work focused on enhancing dependency management and lockfile efficiency within the bazelbuild/rules_rust repository. Two features were developed using Rust and Starlark, targeting Bazel build systems and Cargo workflows. The first enabled crate_universe to support local path patches by vendoring local crate sources, streamlining dependency handling for Bazel projects. The second refactored lockfile generation to rely solely on local patched paths, renaming internal fields and propagating these changes to improve lockfile handling efficiency. These contributions strengthened build determinism and reduced maintenance overhead, demonstrating depth in build system engineering and applied expertise in Rust-based dependency management.