Bug#997996: virt-manager: XML editing: option doesn't work and is not persistent

[Alexis Huxley]

Package: virt-manager
Version: 1:3.2.0-3
Severity: normal

Dear Maintainer,

here's the recipe:

1) start virt-manager
2) go the 'Edit' menu and then choose 'Preferences'
3) enable 'Enable XML editing' and then click 'Close'
4) from the list of VMs, double-click on any VM
5) in the panel on the right with tabs 'Details' and 'XML', click 'XML'
6) observe the warning 'XML editing is disable in Preferences'
7) attempt to edit the XML, this fails

What I expected to happen was:

6) no warning
7) attempt to edit the XML, this succeeds

Additionally, if I rerun virt-manager then the 'Enable XML editing'
option is disabled again, which is also not what I would expect.

If you need more info or have a new version for me to test, then
just let me know.

Alexis

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-- System Information:
Debian Release: 11.1
APT prefers stable-security
APT policy: (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-9-amd64 (SMP w/2 CPU threads)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages virt-manager depends on:
ii dconf-gsettings-backend [gsettings-backend] 0.38.0-2
ii gir1.2-gtk-3.0 3.24.24-4
ii gir1.2-gtk-vnc-2.0 1.0.0-1
ii gir1.2-gtksource-4 4.8.0-1
ii gir1.2-libosinfo-1.0 1.8.0-1
ii gir1.2-libvirt-glib-1.0 3.0.0-1
ii gir1.2-vte-2.91 0.62.3-1
ii python3 3.9.2-3
ii python3-dbus 1.2.16-5
ii python3-gi 3.38.0-2
ii python3-gi-cairo 3.38.0-2
ii python3-libvirt 7.0.0-2
ii virtinst 1:3.2.0-3

Versions of packages virt-manager recommends:
ii gir1.2-ayatanaappindicator3-0.1 0.5.5-2
ii gir1.2-spiceclientglib-2.0 0.39-1
ii gir1.2-spiceclientgtk-3.0 0.39-1
ii libvirt-daemon-system 7.0.0-3

Versions of packages virt-manager suggests:
pn gir1.2-secret-1 <none>
pn gnome-keyring <none>
pn python3-guestfs <none>
pn ssh-askpass <none>
ii virt-viewer 7.0-2

Versions of packages virt-manager is related to:
ii libvirt-clients 7.0.0-3
ii libvirt-daemon 7.0.0-3
ii libvirt0 7.0.0-3
ii osinfo-db 0.20210215-1

-- no debconf information