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!
Snap is shit. I started using flatpak because apt didn’t support apps that I wanted and snap only supported ancient releases. .deb is annoying too and .appimage I don’t like to have the files hanging there