An Emacs mode for the Arc dialect of Lisp.
The code is from the Arc wiki, with modifications to support REPL interaction.
The REPL interaction code is adapted with minor modifications from similar functionality implemented in racket-mode.
This package is not on MELPA at the moment, but you could install it using straight.el:
(use-package arc
:straight
(arc
:type git
:host github
:repo "countvajhula/arc.el")
:config
(setq arc-source-path "/path/to/arc/arc3.2")) ; change to your arc install location