diskimage-builder/diskimage_builder/elements/grub2/package-installs.yaml

signed_grub_efi:
  arch: amd64
signed_shim_efi:
  arch: amd64
grub_bios:
  arch: amd64
signed_grub_efi_arm64:
  arch: arm64
grub_bios_arm64:
  arch: arm64