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Diffstat (limited to 'src/buildstream/_sourcefactory.py')
| -rw-r--r-- | src/buildstream/_sourcefactory.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/buildstream/_sourcefactory.py b/src/buildstream/_sourcefactory.py index 7c90042a8..833c334d0 100644 --- a/src/buildstream/_sourcefactory.py +++ b/src/buildstream/_sourcefactory.py @@ -30,7 +30,9 @@ from .source import Source # plugin_origins (list): Data used to search for external Source plugins # class SourceFactory(PluginContext): - def __init__(self, plugin_base, *, format_versions={}, plugin_origins=None): + def __init__(self, plugin_base, *, format_versions=None, plugin_origins=None): + if format_versions is None: + format_versions = {} super().__init__( plugin_base, Source, [_site.source_plugins], format_versions=format_versions, plugin_origins=plugin_origins |