rebar3 config and backwards compatibility script

rebar.config

@@ -48,7 +48,7 @@
 ]}.
 
 {deps, [
-    {goldrush, ".*", {git, "https://github.com/DeadZen/goldrush.git", {tag, "0.1.9"}}}
+    {goldrush, "0.1.9"}
 ]}.
 
 {xref_checks, []}.
@@ -56,4 +56,3 @@
 
 {cover_enabled, true}.
 {edoc_opts, [{stylesheet_file, "./priv/edoc.css"}]}.
-

rebar.config.script

@@ -0,0 +1,10 @@
+case erlang:function_exported(rebar3, main, 1) of
+    true -> % rebar3
+        CONFIG;
+    false -> % rebar 2.x or older
+        %% Rebuild deps, possibly including those that have been moved to
+        %% profiles
+        [{deps, [
+	   {goldrush, ".*", {git, "https://github.com/DeadZen/goldrush.git", {tag, "0.1.9"}}}
+        ]} | lists:keydelete(deps, 1, CONFIG)]
+end.