[Discuss-gnuradio] pybombs gnuradio install error

[Jason Matusiak]

Tried to install gnuradio on a fresh Ubuntu 14.04 box today but ran into 
an error:

$ pybombs prefix init ~/SDR -a SDR -R gnuradio-default
Exception ruamel.yaml.constructor.ConstructorError: ConstructorError() 
in <generator object construct_undefined at 0x7f42c774dd20> ignored
Traceback (most recent call last):
  File "/usr/local/bin/pybombs", line 11, in <module>
    load_entry_point('PyBOMBS==2.3.1a0', 'console_scripts', 'pybombs')()
  File 
"/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 
561, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File 
"/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 
2649, in load_entry_point
    return ep.load()
  File 
"/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 
2303, in load
    return self.resolve()
  File 
"/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 
2309, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/local/lib/python2.7/dist-packages/pybombs/main.py", line 
26, in <module>
    from pybombs.commands import dispatch
  File 
"/usr/local/lib/python2.7/dist-packages/pybombs/commands/__init__.py", 
line 23, in <module>
    from .base import CommandBase, SubCommandBase, dispatch
  File 
"/usr/local/lib/python2.7/dist-packages/pybombs/commands/base.py", line 
27, in <module>
    from pybombs.config_manager import config_manager
  File 
"/usr/local/lib/python2.7/dist-packages/pybombs/config_manager.py", line 
654, in <module>
    config_manager = ConfigManager()
  File 
"/usr/local/lib/python2.7/dist-packages/pybombs/config_manager.py", line 
330, in __init__
    self.load(select_prefix)
  File 
"/usr/local/lib/python2.7/dist-packages/pybombs/config_manager.py", line 
370, in load
    if self._append_cfg_from_file(self.local_cfg):
  File 
"/usr/local/lib/python2.7/dist-packages/pybombs/config_manager.py", line 
446, in _append_cfg_from_file
    cfg_data = PBConfigFile(cfg_filename).get()
  File "/usr/local/lib/python2.7/dist-packages/pybombs/config_file.py", 
line 42, in __init__
    raise PBException("Error loading {0}: {1}".format(filename, str(e)))
pybombs.pb_exception.PBException: Error loading 
/home/sidekiq/.pybombs/config.yml: could not determine a constructor for 
the tag '!!python/tuple'
  in "<byte string>", line 3, column 3:
    - !!python/tuple []
      ^ (line: 3)

Any idea what the issue is?  Seems like an issue with pybombs itself, 
but I am not sure how to fix it.