This is a re-request as the original request was incorrectly closed out after Flathub added a supporting tool, virt-viewer aka Remote Viewer, not virt-manager aka Virtual Machine Manager and the request was not reopened after being highlighted
Project information: Desktop tool for managing virtual machines via libvirt
Name: virt-manager
GitHub Repository: GitHub - virt-manager/virt-manager: Desktop tool for managing virtual machines via libvirt
Homepage: https://virt-manager.org/
License: GPL-2.0
Upstream has been contacted: PoC Flatpak packaging (feedback and assistance welcome) · Issue #246 · virt-manager/virt-manager · GitHub