[systemd-devel] bootctl says ukify-generated efi file is not a UKI

[EQ]

Dear list,


I'm generating UKIs with ukify via kernel-install (systemd version 255.4). 
These UKIs boot fine using systemd-boot. However, when using bootctl, I get 
unexpected output, the most important being that it says that the UKI efi 
files are not UKIs.

Output of `bootctl list`:

```
Parsed PE file '/boot/EFI/Linux/<machine-id>-6.6.21-gentoo-g.efi' is not a 
UKI.
Parsed PE file '/boot/EFI/Linux/<machine-id>-6.6.30-gentoo-a.efi' is not a 
UKI.
Parsed PE file '/boot/EFI/Linux/<machine-id>-6.6.30-gentoo-b.efi' is not a 
UKI.
Parsed PE file '/boot/EFI/Linux/<machine-id>-6.6.30-gentoo-c.efi' is not a 
UKI.
         type: Boot Loader Specification Type #1 (.conf)
        title: Gentoo Linux (default)
           id: <machine-id>-6.6.21-gentoo-f.conf
       source: /boot//loader/entries/<machine-id>-6.6.21-gentoo-f.conf
     sort-key: gentoo
      version: 6.6.21-gentoo-f
   machine-id: <machine-id>
        linux: /boot//<machine-id>/6.6.21-gentoo-f/linux
      options: systemd.machine_id=<machine-id>

         type: Reported by Boot Loader
        title: <machine-id>-6.6.30-gentoo-c.efi (selected) 
(reported/absent)
           id: <machine-id>-6.6.30-gentoo-c.efi
       source: /sys/firmware/efi/efivars/LoaderEntries-<some efi uuid>

         type: Reported by Boot Loader
        title: <machine-id>-6.6.30-gentoo-b.efi (reported/absent)
           id: <machine-id>-6.6.30-gentoo-b.efi
       source: /sys/firmware/efi/efivars/LoaderEntries-<some efi uuid>

         type: Reported by Boot Loader
        title: <machine-id>-6.6.30-gentoo-a.efi (reported/absent)
           id: <machine-id>-6.6.30-gentoo-a.efi
       source: /sys/firmware/efi/efivars/LoaderEntries-<some efi uuid>

         type: Reported by Boot Loader
        title: <machine-id>-6.6.21-gentoo-g.efi (reported/absent)
           id: <machine-id>-6.6.21-gentoo-g.efi
       source: /sys/firmware/efi/efivars/LoaderEntries-<some efi uuid>

         type: Automatic
        title: Reboot Into Firmware Interface
           id: auto-reboot-to-firmware-setup
       source: /sys/firmware/efi/efivars/LoaderEntries-<some efi uuid>
```

What could be the matter? How do I further investigate? Feel free to ask 
for other outputs.


Best regards,

EQ