Clojure applying a map and keyword arguments destruction

Question

Consider a function with the following signature:

(defn make-widget [& {:keys [x y] :or {x 10 y 20}}]
 ...)

What is the best way to pass a

Answer 1

There is also a known (not invented by me at least), function "mapply":

(defn mapply [f & args] (apply f (apply concat (butlast args) (last args))))

which can be applied like

(mapply your-function {:your "map"})

As to why is this language-specific functionality absent from Clojure core, being implemented more natively and elegantly, no one could ever give me a clear answer.

UPDATE

After I have spent much time programming in Clojure, I personally tend to refrain from creating functions that accept a {} as a vararg. Although at first this can seem appealing, in reality experience proves that passing an explicit {} is always better for many reasons.