refer-clojure for boot repl

Question

I'm trying to set up boot to let me use better-cond in the REPL. I've put this into my build.boot:

(refer-clojure :exclude '[rand rand-int struct cond])
(require '[better-cond.core :refer [cond]])

However, when I start boot repl , I get this warning:

WARNING: cond already refers to: #'clojure.core/cond in namespace: boot.user,
being replaced by: #'better-cond.core/cond

cond does invoke better-cond, but how do I get rid of the warning?

I don't want to get into the habit of ignoring compiler warnings.

Answer 1

If you would prefer to work in boot.user , you can use ns-unmap instead of refer-clojure :

$ boot -d better-cond:1.0.1 repl
boot.user=> (run! #(ns-unmap *ns* %) '[rand rand-int struct cond])
boot.user=> (require '[better-cond.core :refer [cond]])