def get_file_names_on_anaconda_channel(username, anaconda_cli,
                                       channel='main'):
    """Get the names of **all** the files on anaconda.org/username

    Parameters
    ----------
    username : str
    anaconda_cli : return value from binstar_client.utils.get_binstar()
    channel : str, optional
        The channel on anaconda.org/username to upload to.
        Defaults to 'main'

    Returns
    -------
    set
        The file names of all files on an anaconda channel.
        Something like 'linux-64/album-0.0.2.post0-0_g6b05c00_py27.tar.bz2'
    """
    return set(
        [f['basename']
         for f in anaconda_cli.show_channel(channel, username)['files']])