Libvirt virt-install rocky10 gives us "Couldn't find kernel for install tree"

Rocky Linux Help & Support
1 
# rpm -q kernel virt-install osinfo-db
kernel-6.12.0-55.12.1.el10_0.x86_64
kernel-6.12.0-55.18.1.el10_0.x86_64
virt-install-5.0.0-1.el10.noarch
osinfo-db-20250124-1.el10.rocky.20250604.noarch

virt-install \
  --name ${VM} \
:
  --os-variant rocky10 \
  --location /var/lib/libvirt/images/isos/Rocky-10.0-x86_64-dvd1.iso \
  --extra-args "inst.ks=file:/el.ks noipv6 hostname=${VM}" 
:

(Using location here because I need those --extra-args)

Sadly, the result looks like

Starting install...
ERROR    Couldn't find kernel for install tree.
Domain installation does not appear to have been successful.

Some googling later, I learned it’s a nifty change the Fed made around fc37/fc38 – ditching isolinux for a shiny grub setup means no more isolinux dir. The (formerly redundant) kernel and initrd in images/pxeboot are the new cheddar.

Here’s the fix if your osinfo-db looks like mine:

sed -i 's:isolinux:images/pxeboot:' /usr/share/osinfo/os/rockylinux.org/rocky-10.xml

At least, I think so. Mine’s still borked, but it’s borked further along. Let me know what you find out. GLuck.