From: Peter Lemenkov <lemenkov@gmail.com>
Date: Sat, 2 Mar 2013 10:39:15 +0400
Subject: [PATCH] Check system-wide libdir in case of source-based dependency

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>

diff --git a/src/rebar_deps.erl b/src/rebar_deps.erl
index a6e5b27..ba2b4e8 100644
--- a/src/rebar_deps.erl
+++ b/src/rebar_deps.erl
@@ -393,7 +393,12 @@ find_dep(Config, Dep, _Source) ->
     %% _Source is defined.  Regardless of what it is, we must find it
     %% locally satisfied or fetch it from the original source
     %% into the project's deps
-    find_dep_in_dir(Config, Dep, get_deps_dir(Config, Dep#dep.app)).
+    case find_dep_in_dir(Config, Dep, get_deps_dir(Config, Dep#dep.app)) of
+        {_Config1, {avail, _Dir}} = Avail ->
+            Avail;
+        {Config1, {missing, _}} ->
+            find_dep_in_dir(Config1, Dep, get_lib_dir(Dep#dep.app))
+    end.
 
 find_dep_in_dir(Config, _Dep, {false, Dir}) ->
     {Config, {missing, Dir}};