From 8b1193e4af7a43abe84a108435b9a2c52e475f8f Mon Sep 17 00:00:00 2001
From: Francisco Rojas <frojas@groupon.com>
Date: Thu, 17 Mar 2016 20:07:36 -0700
Subject: [PATCH] Add spec for global_cache_dir

---
 src/rebar_dir.erl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/rebar_dir.erl b/src/rebar_dir.erl
index 840d1f92..df05cdba 100644
--- a/src/rebar_dir.erl
+++ b/src/rebar_dir.erl
@@ -92,6 +92,7 @@ global_config() ->
     Home = home_dir(),
     filename:join([Home, ".config", "rebar3", "rebar.config"]).
 
+-spec global_cache_dir(rebar_dict()) -> file:filename_all().
 global_cache_dir(Opts) ->
     RebarCacheDir = case os:getenv("REBAR_CACHE_DIR") of
         false ->