From a19a0cd5efbce527f5ada3885161951d1ca2b5b8 Mon Sep 17 00:00:00 2001
From: Tristan Sloughter <t@crashfast.com>
Date: Fri, 18 Oct 2013 20:46:37 -0500
Subject: add extend to release definition. This closes #16

---
 src/rlx_prv_config.erl | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/rlx_prv_config.erl')

diff --git a/src/rlx_prv_config.erl b/src/rlx_prv_config.erl
index 126b497..e2eac7e 100644
--- a/src/rlx_prv_config.erl
+++ b/src/rlx_prv_config.erl
@@ -156,6 +156,18 @@ load_terms({dev_mode, DevMode}, {ok, State0}) ->
     {ok, rlx_state:dev_mode(State0, DevMode)};
 load_terms({include_src, IncludeSrc}, {ok, State0}) ->
     {ok, rlx_state:include_src(State0, IncludeSrc)};
+load_terms({release, {RelName, Vsn, {extend, RelName2}}, Applications}, {ok, State0}) ->
+    Release0 = rlx_release:new(RelName, Vsn),
+    ExtendRelease = rlx_state:get_configured_release(State0, RelName2, Vsn),
+    Applications1 = rlx_release:goals(ExtendRelease),
+    case rlx_release:goals(Release0,
+                          lists:umerge(lists:usort(Applications),
+                                      lists:usort(Applications1))) of
+        E={error, _} ->
+            E;
+        {ok, Release1} ->
+            {ok, rlx_state:add_configured_release(State0, Release1)}
+        end;
 load_terms({release, {RelName, Vsn}, Applications}, {ok, State0}) ->
     Release0 = rlx_release:new(RelName, Vsn),
     case rlx_release:goals(Release0, Applications) of
-- 
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