I believe I've nailed this one down, after a day of heads-down testing.
The issue boils down to this bit of code, in /usr/lib/python3/dist-
packages/cmd2.py:
# The extraneous output bug in pyperclip on Linux using xclip was fixed in
more recent versions of pyperclip
if sys.platform.startswith('linux') and pyperclip_ver < 1.6:
# Avoid extraneous output to stderr from xclip when clipboard is empty
at cost of overwriting clipboard contents
pyperclip.copy('')
else:
# Try getting the contents of the clipboard
_ = pyperclip.paste()
Specifically that last line: `_ = pyperclip.paste()`, which assumes a
clipboard exists and has been initialized. In most cases, it has
not/will not be.
The attached diff to cmd2.py will allow these commands to succeed. I
initially added some debug to allow me to see if the clipboard was
accessible or not, and that's how I found this.
Let me know if this is sufficient to SRU into the python3-cmd2 package
to address this.
** Patch added: "cmd2-diff.patch"
https://bugs.launchpad.net/ubuntu/+source/python-openstackclient/+bug/1945661/+attachment/5761586/+files/cmd2-diff.patch
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https://bugs.launchpad.net/bugs/1945661
Title:
openstack commands fail with GTK3 error
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