During August 2025, Unhammer focused on enhancing the onboarding experience for Haskell developers using Emacs by delivering targeted documentation updates to the input-output-hk/haskell-language-server repository. They authored comprehensive Emacs Lisp documentation that guides users through configuring the Haskell Language Server, including setting the formattingProvider to fourmolu, leveraging property lists for eglot integration, and managing plugin preferences. Their work emphasized clarity and practical configuration steps, aiming to reduce setup time and support requests. By concentrating on configuration and documentation skills, Unhammer addressed common pain points for new users, though the scope was limited to a single feature without direct bug fixes.