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-rw-r--r--morphlib/morph2.py8
1 files changed, 4 insertions, 4 deletions
diff --git a/morphlib/morph2.py b/morphlib/morph2.py
index b5517f46..b825f8cf 100644
--- a/morphlib/morph2.py
+++ b/morphlib/morph2.py
@@ -27,10 +27,10 @@ class Morphology(object):
'''
static_defaults = [
- ('configure-commands', []),
- ('build-commands', []),
- ('test-commands', []),
- ('install-commands', []),
+ ('configure-commands', None),
+ ('build-commands', None),
+ ('test-commands', None),
+ ('install-commands', None),
('chunks', {}),
('sources', []),
('strata', []),