Hey Maxim,
> When the bootloader used is grub-efi-bootloader, an ESP partition and file > system is already added by the image generator. If a conflicting > user-provided EFI file system is provided, it will (likely) cause the boot to > fail, as happens for the lightweight-desktop.tmpl and desktop.tmpl templates > under gnu/system/examples. Nice one. I would just clarify in the commit message that the ESP partition is added only when the selected image type is "raw". Otherwise, it looks fine! Thanks, Mathieu