Developer Daniel Janus has released Edsger, a specialized tool designed to bring a handwritten Clojure REPL to the reMarkable 2 e-ink tablet. This project bridges the gap between tactile note-taking and functional programming by allowing users to interact with code through handwriting on a digital paper interface.

Traditional coding environments rely heavily on mechanical keyboards, but this implementation targets the unique hardware constraints of e-ink displays. By leveraging the handwriting capabilities of the tablet, the REPL enables a different kind of developer workflow that prioritizes sketching logic and executing code snippets without a standard input device.

Integrating a Lisp-based language like Clojure into a handwriting-centric device changes how developers might approach rapid prototyping or mathematical modeling. The tool transforms the tablet from a simple digital notebook into a specialized environment for executing live code through pen strokes. This project represents a niche intersection of hardware experimentation and functional programming.