'Converts a package name and type into a tarball name.
:param name: The name of the package
:param pkg_type: The type of the package
:return: A tarball filename for that specific type of package'

@staticmethod
def get_tarball_name(name, pkg_type):

    assert ('-' not in pkg_type)
    return ('%s-%s.tar.bz2' % (pkg_type, name))
