The Flatpak is already packaged and works well. It just needs to be maintained from a person that joins the Inkscape community.
This would allow further improvements like Portal support and making the app official on Flathub.
Update: One might have been found!
Very nice, thanks for the links.
Where do the sandboxing profiles come from? I suppose from the aisap repo?
https://github.com/mgord9518/aisap/blob/main/profiles/profile_database.json