That's what we get for relying on a private var.

project.clj

@@ -1,4 +1,4 @@
-(defproject lein-standalone-repl "0.1.4"
+(defproject lein-standalone-repl "0.1.5"
   :description "Backport of a bugfix for trampoline repl."
   :url "https://github.com/technomancy/lein-standalone-repl"
   :license {:name "Eclipse Public License"

src/leiningen/standalone_repl.clj

@@ -1,19 +1,12 @@
 (ns leiningen.standalone-repl
   (:require [leiningen.trampoline :as trampoline]
             [leiningen.repl :as repl]
-            [leiningen.core.eval :as eval]
-            [leiningen.core.project :as project]
-            [leiningen.core.user :as user]))
-
-(defn- trampoline-repl [project]
-  (let [profiles (repl/profiles-for project true true)]
-    (eval/eval-in-project
-     (project/merge-profiles project profiles)
-     `(reply.main/launch-standalone ~(repl/options-for-reply project))
-     `(require ~@(#'leiningen.repl/init-requires project 'reply.main)))))
+            [leiningen.run :as run]
+            [leiningen.core.project :as project]))
 
 (defn standalone-repl
   "Backport of a bugfix for trampoline repl."
   [project]
-  (with-redefs [leiningen.repl/trampoline-repl trampoline-repl]
-    (trampoline/trampoline project "repl")))
+  (trampoline/trampoline (project/merge-profiles project
+                                                 [repl/trampoline-profile])
+                         "run" "-m" "reply.main/launch-standalone" "nil"))