[Bug 1945661] Re: openstack commands fail with GTK3 error

[Mark]

I also get this error when I execute the "openstack XXX" command remotely in an Xshell, and I noticed that the same prompt seems to be related to trying to open the GUI - initialization.
So, I run "openstack XXX" in putty, and no more related errors.

System version: ubuntu20.04 tls
openstack: W
Possible solutions: use terminal tools without desktop functions, or cancel the installation of the desktop from the underlying system

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https://bugs.launchpad.net/bugs/1945661

Title:
  openstack commands fail with GTK3 error

Status in python-openstackclient package in Ubuntu:
  Confirmed

Bug description:
  Openstack release: Wallaby
  OS: Ubuntu 20.04 server edition
  After installation of python3-openstackclient from apt, while setting up user, roles and project, I executed following command: 
  openstack domain create --description "An Example Domain" example

  Error: 
  Traceback (most recent call last):
    File "/usr/bin/openstack", line 6, in <module>
      from openstackclient.shell import main
    File "/usr/lib/python3/dist-packages/openstackclient/shell.py", line 23, in <module>
      from osc_lib import shell
    File "/usr/lib/python3/dist-packages/osc_lib/shell.py", line 24, in <module>
      from cliff import app
    File "/usr/lib/python3/dist-packages/cliff/app.py", line 22, in <module>
      import cmd2
    File "/usr/lib/python3/dist-packages/cmd2.py", line 585, in <module>
      _ = pyperclip.paste()
    File "/usr/lib/python3/dist-packages/pyperclip/__init__.py", line 667, in lazy_load_stub_paste
      copy, paste = determine_clipboard()
    File "/usr/lib/python3/dist-packages/pyperclip/__init__.py", line 558, in determine_clipboard
      return init_gi_clipboard()
    File "/usr/lib/python3/dist-packages/pyperclip/__init__.py", line 167, in init_gi_clipboard
      gi.require_version('Gtk', '3.0')
    File "/usr/lib/python3/dist-packages/gi/__init__.py", line 129, in require_version
      raise ValueError('Namespace %s not available' % namespace)

  Had to install GTK3 to make openstack commands work but it is taking
  huge time to get a response to the commands. The wait time after
  firing any openstack cli command is around 30 seconds.

  Anybody faced the issue? What is the fix for it if it exists?

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