The 'system-config-printer' utility does not start when pygobject2 is missing on the system.

Issue

• Unable to start "system-config-printer" in Red Hat Enterprise Linux 7 minimal installtion. Getting following errors;

# system-config-printer
/usr/share/system-config-printer/system-config-printer.py:31: PyGIWarning: GdkPixbuf was imported without specifying a version first. Use gi.require_version('GdkPixbuf', '2.0') before import to ensure that the right version gets loaded.
  from gi.repository import GdkPixbuf
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
/usr/share/system-config-printer/system-config-printer.py:33: PyGIWarning: Gdk was imported without specifying a version first. Use gi.require_version('Gdk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gdk
Traceback (most recent call last):
  File "/usr/share/system-config-printer/system-config-printer.py", line 76, in <module>
    import installpackage
  File "/usr/share/system-config-printer/installpackage.py", line 23, in <module>
    import glib
ImportError: No module named glib