Set c.t.n refresh dirs, boot & lein. Ignores dirs where `.no-reload` file exists.

user.clj

(ns user
  (:require [clojure.tools.namespace.repl :as ns-tools]
            [clojure.string :as string]
            [clojure.java.io :as io]))

(ns-tools/disable-reload!)

(let [reload-dirs (->> (or (try
                             (require 'boot.core)
                             ((resolve 'boot.core/get-env) :directories)
                             (catch Exception _
                               nil))
                           ; Leiningen
                           (do (require 'clojure.tools.namespace.dir)
                               ((resolve 'clojure.tools.namespace.dir/dirs-on-classpath))))
                       (remove #(.exists (io/file % ".no-reload"))))]
  (println "Reload dirs:" reload-dirs)
  (apply ns-tools/set-refresh-dirs reload-dirs))