During October 2025, Ben Chik contributed to the facebook/buck2 repository by implementing ergonomic enum value access, focusing on both usability and API stability. He introduced attribute-based syntax for enums, allowing developers to reference values as Color.RED instead of the previous function-call style, Color("RED"), thereby improving code readability. To ensure a smooth transition and minimize migration friction, Ben preserved backward compatibility with the existing syntax. This work involved language design and enum implementation using Rust and Starlark, laying the groundwork for future enhancements. The depth of the change reflects careful consideration for both current users and future contributors to Buck2.