Bug#988392: Impossible to install grub-pc and grub-efi-amd64 in parallel

[Paul Menzel]

Package: src:grub
Version: 2.04-18
Severity: normal


Dear Debian folks,


I have a Debian installation on a disk, I carry around, and I want to 
boot on BIOS and (U)EFI systems. This would be possible with the switch 
`--target`.

     sudo grub-install --target=i386-pc --boot-directory=/boot /dev/sda

and

     sudo grub-install --target=x86_64-efi /dev/sda

Unfortunately I am unable to install both packages in parallel as they 
conflict (Replaces?) with each other.

     $ apt show grub-pc
     […]
     Replaces: grub, grub-common (<= 1.97~beta2-1), grub-coreboot, 
grub-efi-amd64, grub-efi-ia32, grub-ieee1275, grub-legacy, grub2 (<< 
2.04-18)

The GRUB build system also does not seem to allow to configure the build 
to build the platforms in parallel, but in the end the files in 
`/usr/lib/grub/` should be able to coexist.

It’ be great if Debian’s GRUB packages could be installed in parallel.


Kind regards,

Paul