3. It is Cider + nrepl + some other utilities these seem to depend on. 6. When I last checked emacs-cider only gave a stack trace when exception occurred, not

3. It is Cider + nrepl + some other utilities these seem to depend on. 6. When I last checked emacs-cider only gave a stack trace when exception occurred, not a live repl at that program state. See how emacs responds when there is an exception in elisp, one gets dropped into repl where one can examine, even modify the value of variables at that point of exception, and even try restarting execution from that point. Much of tutorial and other information seems to use leiningen atleast when I had last seen it. If tools.deps is the canonical way to do it, they why are people refering to lein which is a third party tool. Using lein, is a batteries-not-included approach, I am not sure why it is seems so popular. If lein is so essential, then why not bundle it into the clojure base jar itself.