in relx call only include deps dirs if they exist

src/rebar_prv_release.erl

@@ -33,16 +33,18 @@ init(State) ->
 -spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
 do(State) ->
     Options = rebar_state:command_args(State),
-    DepsDir = [rebar_dir:default_deps_dir(State)], % rebar_dir:deps_dir(State)],
+    DepsDir = rebar_dir:default_deps_dir(State),
+    ProfileDepsDir = rebar_dir:deps_dir(State),
+    LibDirs = lists:usort(rebar_utils:filtermap(fun ec_file:exists/1, [DepsDir, ProfileDepsDir])),
     OutputDir = filename:join(rebar_dir:profile_dir(State), ?DEFAULT_RELEASE_DIR),
     AllOptions = string:join(["release" | Options], " "),
     try
         case rebar_state:get(State, relx, []) of
             [] ->
-                relx:main([{lib_dirs, DepsDir}
+                relx:main([{lib_dirs, LibDirs}
                           ,{output_dir, OutputDir}], AllOptions);
             Config ->
-                relx:main([{lib_dirs, DepsDir}
+                relx:main([{lib_dirs, LibDirs}
                           ,{config, Config}
                           ,{output_dir, OutputDir}], AllOptions)
         end,