During February 2025, Braidn focused on enhancing build configuration flexibility in the facebook/buck2 and facebook/buck2-prelude repositories. He developed and implemented a feature allowing filegroup rules to specify custom output directories via a new 'out' attribute, addressing naming conflicts and improving artifact organization, especially when used within macros. This work required careful design and cross-repository coordination to ensure consistent behavior and reduce configuration complexity. Leveraging expertise in Starlark, Python, and build system development, Braidn contributed to rule attribute extensions and documentation, delivering a well-integrated solution that streamlines artifact management and supports more maintainable build workflows across both repositories.