The Fennel programming language is one of my favorite programming languages. It gets a lot of things done right: Modern syntax (Clojure-like, but better) Immutable by default Excellent pattern matching If I ever find myself working with a Lua interpreter (Hammerspoon, Neovim, TIC-80, etc.), Fennel is often my go-to for concise and efficient code. The question is, can I have a REPL for Hammerspoon? There are multiple options available, like nREPL via jeejah, but I find it limited compared to the REPL that comes with fennel-mode.