ClojureScript has compile-time only macros, but they are handy for repetitive (set!) calls as in your example. You might want to look at the (attr) macro in the cljs-d3 source:

https://github.com/lynaghk/cljs-d3/blob/master/src/clj/cljs_...

which solves a very similar problem to the one you mentioned in the article. In this case it expands attr(hash-map) into multiple attr(key, value) calls at compile time.