Comment # 10 on bug 1173226 from Ludwig Nussel

(In reply to Marcus Schaefer from comment #5)
> Even if you fix shim-install to not call grub2-install on
> efi it will still do that for older versions and I doubt there will be
> anybody touching it there.

if shim-install is considered a detail of grub2-install we could move
shim-install to %_libexecdir as it's no longer meant to be called outside.
Therefore kiwi wouldn't find it anymore so wouldn't have to activate the code
path for the hack on old systems.