Allow for plugin specific repositories with :plugin-repositories.

leiningen-core/src/leiningen/core/project.clj

@@ -237,11 +237,19 @@
     (when-not (pomegranate/modifiable-classloader? cl)
       (.setContextClassLoader thread (DynamicClassLoader. cl)))))
 
+(defn- merge-plugin-repositories [project]
+  (if-let [pr (:plugin-repositories project)]
+    (if (:omit-default-repositories project)
+      (assoc project :repositories pr)
+      (update-in project [:repositories] merge pr))
+    project))
+
 (defn load-plugins
   ([project key]
      (when (seq (project key))
        (ensure-dynamic-classloader)
-       (classpath/resolve-dependencies key project :add-classpath? true))
+       (classpath/resolve-dependencies key (merge-plugin-repositories project)
+                                       :add-classpath? true))
      (doseq [wagon-file (-> (.getContextClassLoader (Thread/currentThread))
                             (.getResources "leiningen/wagons.clj")
                             (enumeration-seq))

sample.project.clj

@@ -173,6 +173,10 @@
                              ;; enironment variable to be used based on
                              ;; the key; in this case LEIN_PASSWORD.
                              :username "milgrim" :password :env}}
+  ;; These repositories will be included with :repositories when loading plugins.
+  ;; This would normally be set in a profile for non-public repositories.
+  ;; All the options are the same as in the :repositories map.
+  :plugin-repositories {"internal-plugin-repo" "http://example.org/repo"}
   ;; You can set :update and :checksum policies here to have them
   ;; apply for all :repositories. Usually you will not set :update
   ;; directly but apply the "update" profile instead.