install dbus service mechanism add python, python-devel build requirements
        remove usermode, libuser-python requirements add dbus-python,
        PolicyKit-gnome, python-slip-dbus requirements ship dbus, PolicyKit
        configuration and scsamba python module use dbus/PolicyKit for
        privileged operations in the frontend use pwd.getpwall () instead of
        libuser for user enumeration implement dbus service wrapping the
        backend restructure source, prepare for dbus/PolicyKit