This package adds Clojure syntax checker (via Joker) to flycheck. To use it, add to your init.el: (require 'flycheck-joker) Make sure Joker binary is on your path. Joker version v0.9.7 or greater is required. Joker installation instructions are here: https://github.com/candid82/joker#installation Please read about Joker's linter mode to understand its capabilities and limitations: https://github.com/candid82/joker#linter-mode Specifically, it's important to configure Joker to reduce false positives: https://github.com/candid82/joker#reducing-false-positives Please see examples of the errors Joker can catch here: https://github.com/candid82/SublimeLinter-contrib-joker#examples