with multi-comp you can combine comp fns -> [:age :count :size :weight]

multi-comp.clj

(def data [{:v 12, :a 10} {:v 21, :a 113} {:v 1, :a 2} {:v 12, :a 223} {:v 100, :a 23} {:v 1, :a 113}])

(defn multi-comp
  ([fns a b]
    (multi-comp fns < a b))
  ([[f & others :as fns] order a b]
    (if (seq fns)
      (let [result (compare (f a) (f b))
            f-result (if (= order >) (* -1 result) result)]
        (if (= 0 f-result)
          (recur others order a b)
          f-result))
      0)))

(sort #(multi-comp [:a :v] > %1 %2) data)
;or
(sort #(multi-comp [:a :v] %2 %1) data)
;;=> ({:v 12, :a 223} {:v 21, :a 113} {:v 1, :a 113} {:v 100, :a 23} {:v 12, :a 10} {:v 1, :a 2}) 

(sort #(multi-comp [:a :v] < %1 %2) data)
;or
(sort #(multi-comp [:a :v] %1 %2) data)
;;=> ({:v 1, :a 2} {:v 12, :a 10} {:v 100, :a 23} {:v 1, :a 113} {:v 21, :a 113} {:v 12, :a 223})