Clojure CLI command line tool

A basic template for creating a Clojure CLI command tool.

   (ns practicalli.tool-name
    (:gen-class)
    (:require [clojure.tools.cli :as cli]))

  (def VERSION "0.0.1")

  (def cli-opts
    [["-v" "--verbose" "Increase verbosity" :default 0 :update-fn inc]
     [nil  "--version" "Print version and exit"]
     ["-h" "--help" "Print this help information"]])

  (defn exec-tool [args {:keys [] :as opts}]
    ;; main functionality goes here, you get a seq of positional arguments, and a
    ;; map of options.
    )

  (defn -main [& args]
    (let [{:keys [errors options arguments summary]} (cli/parse-opts args cli-opts)]
      (cond
        (seq errors)
        (do
          (run! println errors)
          (println summary)
          (System/exit -1)) ;; non-zero exit code if something goes wrong

        (:help options)
        (do
          (println summary)
          (System/exit 0))

        (:version options)
        (do
          (println VERSION)
          (System/exit 0))

        :else
        (main arguments options))))

Start by reviewing the supplied Clojure CLI template and the repository's existing clojure-cli examples or entry points, if any. No target file, test, or acceptance criteria are named, so confirm where the template belongs and what command behavior is expected before making changes.