Why is leiningen so slow when it starts?

Question

I\'m using lein repl to execute clojure repl in console. When I run it, it takes over 15 seconds. When I run java -cp clojure-1.6.0.jar clo

Answer 1

If you run lein repl from within a project directory, it will load your project's source files in addition to starting a repl. Even for a small project, this can add significant time if your source files reference external dependencies.

java -cp clojure-1.6.0.jar clojure.main won't load any project source files or dependencies.