Adding Clojure to Spacemacs

When you open a Clojure file, a file ending in .clj or .cljs then Spacemacs will ask you if you want to install the Clojure.

If you say yes, and you should, then Spacemacs will update its configuration file, ~/.spacemacs to include the clojure layer and download all the relevant packages (from elpa, melpa).

Once the Clojure packages have downloaded, you are ready to use all the Clojure features.