liuxg@liuxg:~/snappy/snapcraft/examples/webcam-webui$ snapcraft
DEPRECATED: plugin names ending in -project are deprecated. Using python3 instead of python3-project
Traceback (most recent call last):
File "/usr/local/bin/snapcraft", line 4, in <module>
__import__('pkg_resources').run_script('snapcraft==0.5', 'snapcraft')
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 698, in run_script
self.require(requires)[0].run_script(script_name, ns)
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 1616, in run_script
exec(code, namespace, namespace)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/EGG-INFO/scripts/snapcraft", line 33, in <module>
snapcraft.main.main()
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/main.py", line 149, in main
args.func(args)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/cmds.py", line 103, in assemble
snap(args)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/cmds.py", line 85, in snap
cmd(args)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/cmds.py", line 348, in cmd
config = _load_config()
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/cmds.py", line 414, in _load_config
_config = snapcraft.yaml.Config()
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/yaml.py", line 139, in __init__
self.load_plugin(part_name, plugin_name, properties)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/yaml.py", line 192, in load_plugin
part_name, plugin_name, properties)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/lifecycle.py", line 300, in load_plugin
return PluginHandler(plugin_name, part_name, properties)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/lifecycle.py", line 75, in __init__
self._load_code(plugin_name, properties)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/lifecycle.py", line 102, in _load_code
self.code = plugin(self.name, options)
File "/usr/local/lib/python3.4/dist-packages/snapcraft-0.5-py3.4.egg/snapcraft/plugins/python3.py", line 68, in __init__
self.stage_packages.extend([
AttributeError: 'NoneType' object has no attribute 'extend'