Comment 1 for bug 1873303

Please let me add that the directory structure of the daily-live installation kernel and initrd should be compatible to "virt-install --location"'s distribution tree installations.
Some snippets form the man page:
      -l, --location OPTIONS
           Distribution tree installation source. virt-install can recognize
           certain distribution trees and fetches a bootable kernel/initrd
           pair to launch the install.
...
           Some distro specific url samples:
...
           Debian
               https://ftp.us.debian.org/debian/dists/stable/main/installer-amd64/
           Ubuntu
               https://us.archive.ubuntu.com/ubuntu/dists/wily/main/installer-amd64/

Please notice that using --cdrom is not a valid alternative to --location, since --extra-args for kernel arguments is only supported in combination with --location.

With the change of the URL from:
http://archive.ubuntu.com/ubuntu/dists/focal/main/installer-amd64/current/images/
to
http://archive.ubuntu.com/ubuntu/dists/focal/main/installer-amd64/current/legacy-images/
virt-install is currently broken on Ubuntu (for all architectures), since virt-install looks for .../images/
(see also LP 1872941)

With a proper location and layout for the daily-live installer artifacts virt-install could be made operational again, which is highly desirable, since it's a popular tool used by partners and customers (even if it's in universe).
And almost all other distros support it too (see man page), so we should not fall behind ...