From 0ad170ce2d5ea81c4aceab16aca27d7f2f3c6e8d Mon Sep 17 00:00:00 2001
From: Sam Thursfield <sam.thursfield@codethink.co.uk>
Date: Wed, 12 Mar 2014 11:31:04 +0000
Subject: Fix creating a Source() from a cluster morphology

The Source.__init__() function assumes that the artifact.split_rules
attribute is not None. Rather than complicating that code with error
checks, let's make it always be correct.

Avoids traceback from Source.__init__() when passing a cluster morph to
`morph build`.
---
 morphlib/artifactsplitrule.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/morphlib/artifactsplitrule.py b/morphlib/artifactsplitrule.py
index 246691d8..bc92e5fb 100644
--- a/morphlib/artifactsplitrule.py
+++ b/morphlib/artifactsplitrule.py
@@ -300,4 +300,4 @@ def unify_system_matches(morphology):
 
 
 def unify_cluster_matches(_):
-    return None
+    return SplitRules()
-- 
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