[fennectech@Alixia ~/SingularityViewer]$  sudo pip install "hg+https://bitbucket.org/alchemyviewer/autobuild-alchemy"
Collecting hg+https://bitbucket.org/alchemyviewer/autobuild-alchemy
  Cloning hg https://bitbucket.org/alchemyviewer/autobuild-alchemy to /tmp/pip-blw_c2k3-build
    Complete output from command python setup.py egg_info:
    Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6.14.tar.gz
    Extracting in /tmp/tmpq82mkelg
    Traceback (most recent call last):
      File "/tmp/pip-blw_c2k3-build/distribute_setup.py", line 164, in use_setuptools
        raise ImportError
    ImportError

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-blw_c2k3-build/setup.py", line 26, in <module>
        use_setuptools()
      File "/tmp/pip-blw_c2k3-build/distribute_setup.py", line 166, in use_setuptools
        return _do_download(version, download_base, to_dir, download_delay)
      File "/tmp/pip-blw_c2k3-build/distribute_setup.py", line 146, in _do_download
        _build_egg(egg, tarball, to_dir)
      File "/tmp/pip-blw_c2k3-build/distribute_setup.py", line 120, in _build_egg
        _extractall(tar)
      File "/tmp/pip-blw_c2k3-build/distribute_setup.py", line 488, in _extractall
        self.chown(tarinfo, dirpath)
    TypeError: chown() missing 1 required positional argument: 'numeric_owner'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-blw_c2k3-build