Writing (in-ns \'dbx) to a file and loading it isn\'t changing the default namespace of the repl (using cygwin/console). The namespace is still user=><
(in-ns \'dbx)
user=><
Nowadays is :repl-options {:init-ns foo.bar}.
:repl-options {:init-ns foo.bar}
See https://github.com/technomancy/leiningen/blob/master/sample.project.clj