From 124a4224d210ee857adcbfa10df26dc31f396661 Mon Sep 17 00:00:00 2001
From: Valentin David <valentin.david@codethink.co.uk>
Date: Tue, 3 Sep 2019 11:20:18 +0200
Subject: Fix an invalid deletion of potentially non-existant yaml field

---
 buildstream/_loader/loadelement.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/buildstream/_loader/loadelement.py b/buildstream/_loader/loadelement.py
index 0b38cad65..d90e4fe44 100644
--- a/buildstream/_loader/loadelement.py
+++ b/buildstream/_loader/loadelement.py
@@ -152,6 +152,7 @@ def _extract_depends_from_node(node, *, key=None):
         output_deps.append(dependency)
 
     # Now delete the field, we dont want it anymore
-    del node[key]
+    if key in node:
+        del node[key]
 
     return output_deps
-- 
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