Comment 2 for bug 1936857

On Tue, Jul 20, 2021 at 07:07:55PM -0000, Dimitri John Ledkov wrote:
> in later releases grub-install has stopped forking to call efibootmgr in
> favor of using an EFI library.
>
> Does it return non-zero error code? because it should be ignoring
> failure to call efibootmgr. And otherwise grub installation was
> completed.

ubuntu@ubuntu:~$ dpkg-query -W grub2-common
grub2-common 2.02-2ubuntu8.23
ubuntu@ubuntu:~$ sudo grub-install
Installing for arm64-efi platform.
grub-install: error: efibootmgr: not found.
ubuntu@ubuntu:~$ echo $?
1

After installing efibootmgr (to demonstrate it is the only issue):

ubuntu@ubuntu:~$ sudo grub-install
Installing for arm64-efi platform.
Installation finished. No error reported.
ubuntu@ubuntu:~$ echo $?
0

> efibootmgr recommends has been added back in Debian, but not yet in
> Ubuntu. becuase in general it is useful. Previously the dependency was
> on the grub-efi-arm64-bin package Depends: efibootmgr which is not there
> in the binary copies.
>
> Imho src:grub2 in xenial/bionic should depend on efibootmgr on amd64 &
> arm64, or we should add efibootmgr dep in the grub2-unsigned package.
>
> Upgrades should not be affected, since efibootmgr will not be removed.
> But fresh installs are affected, like the newly respun cloud-image.

ACK