It is only a recommends in Debian intentionally, and a recommends is the
It can work without it, and adding it enhances the functionality .
root@b2:~# apt install virt-manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
The following NEW packages will be installed:
gir1.2-pango-1.0 gir1.2-spiceclientglib-2.0 gir1.2-spiceclientgtk-3.0
0 upgraded, 236 newly installed, 0 to remove and 0 not upgraded.
Need to get 51.4 MB of archives.
After this operation, 226 MB of additional disk space will be used.
Do you want to continue? [Y/n]
AFAIK: --install-recommends is the default, maybe it does not work together
This is  IMHO - might be a feature bug for apt to discuss there if it is
** Attachment added: "example install"
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Dependency to gir1.2-spice-client-gtk-3.0 needs to update
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