One would normally use a name space to group together code that deals with a foreign library. So, upgrading to a new version of the library is just a matter of

One would normally use a name space to group together code that deals with a foreign library. So, upgrading to a new version of the library is just a matter of 1. update the dependencies by changing the version number of the library in project.clj; 2. load the library; 3. changing the name space (a file) that deals with the library, and 4. changing the corresponding test name space (a file), and make sure all tests pass. That's it. The Clojure coding process is REPL driven, so basically one tests every changes. Also, one codes in a bottom up fashion, starting from simple and small functions, and composing them into big functionalities. There' no big design up-front. It's an exploratory process, and it's fun.