Compiling: lein clean lein deps lein compile Interactive local development: lein swank & emacs M-x swank-clojure-project M-x slime-connect C-x C-f src/tabsfm.clj C-c C-k C-x C-f src/local_dev.clj C-c C-k Now, in the REPL, Type "," then "i", then "netlet" to enter the namespace. Then, (start-server (var app)) And open http://localhost:8080 in your browser. Google AppEngine Deploy appengine/bin/appcfg.sh update war