[Bug 1920008] Re: grub2-signed depends on grub2-common

[Dimitri John Ledkov]

On focal:

# dpkg-query -W | grep grub
grub-common	2.04-1ubuntu26.9
grub-efi-amd64	2.04-1ubuntu26.9
grub-efi-amd64-bin	2.04-1ubuntu26.9
grub-efi-amd64-signed	1.142.11+2.04-1ubuntu26.9
grub2-common	2.04-1ubuntu26.9

grub2-common from release is good enough for one grub (it is same major
series).

Hence installing onegrub doesn't need to upgrade grub2-common

# apt install grub-efi-amd64-signed
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  grub-efi-amd64 grub-efi-amd64-bin
Recommended packages:
  efibootmgr secureboot-db
The following packages will be upgraded:
  grub-efi-amd64 grub-efi-amd64-bin grub-efi-amd64-signed
3 upgraded, 0 newly installed, 0 to remove and 14 not upgraded.
Need to get 1256 kB of archives.
After this operation, 351 kB of additional disk space will be used.
Do you want to continue? [Y/n]

grub-mkimage -O x86_64-efi -o foo -p /boot/grub --verbose; works

and if i choose to upgrade grub-common too, it also still works.


** Tags removed: verification-needed-focal
** Tags added: verification-done-focal

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https://bugs.launchpad.net/bugs/1920008

Title:
  grub2-signed depends on grub2-common

Status in grub2-signed package in Ubuntu:
  Fix Released
Status in grub2-signed source package in Xenial:
  Fix Committed
Status in grub2-signed source package in Bionic:
  Fix Committed
Status in grub2-signed source package in Focal:
  Fix Committed
Status in grub2-signed source package in Groovy:
  Fix Committed

Bug description:
  [Impact]

   * one-grub has loosed the dependencies between src:grub2-signed and
  src:grub2, specifically grub2-common. However the modules in grub
  modules built by src:grbu2-unsigned require a high enough version of
  grub2-common with support for R_X86_64_PLT32 relocations. Generate
  depends that are high enough, for older releases.

  Otherwise users that have grub-efi-amd64-signed installed may get
  errors upon trying to configure the package from `grub-install` unable
  to handle unknown relocation.

  [Test Plan]

   * Disable -proposed

   * Install grub-efi-amd64-signed

   * Enable -proposed

   * Install grub-efi-amd64-signed (again)

   * Observe that not only grub-efi-amd64-signed is upgraded, but also
  that new version of grub2-common are upgraded too, on bionic and
  earlier series.

  
  [Where problems could occur]

   * As one-grub evolves, similar dep updates may be required in the
  future again. Thus every one-grub update should be tested across all
  releases prior to upload into -proposed.

  [Other Info]
   
   * This bug also reported at https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1917509

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