[Bug 2141727] Re: [Ubuntu 26.04] grub-mkconfig fails version_find_latest command not found

[Julian Andres Klode]

Requested removal of tboot in
https://bugs.launchpad.net/ubuntu/+source/tboot/+bug/2142596, following
removal earlier in Debian

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https://bugs.launchpad.net/bugs/2141727

Title:
  [Ubuntu 26.04] grub-mkconfig fails version_find_latest command not
  found

Status in grub2 package in Ubuntu:
  Invalid
Status in tboot package in Ubuntu:
  Invalid

Bug description:
  1. Fresh install Ubuntu server 26.04 with the daily build 20260202
  2. Install tboot package:
  # apt update; apt install -y tboot
  3. It will fail with output "version_find_latest command not found" when use command grub-mkconfig or update-grub to generate grub configuration file

  4. The root cause is that following file will use the command ""version_find_latest command"
  /etc/grub.d/20_linux_tboot:
    current_tboot=`version_find_latest $tboot_list`
    linux=`version_find_latest $list`

  /etc/grub.d/20_linux_xen_tboot:
    current_xen=`version_find_latest $xen_list`
    current_tboot=`version_find_latest $tlist`
    linux=`version_find_latest $list`

  Below is a same issue in Ubuntu 24.04, but does not fix the configuration file resided in tboot package, please fix it, thanks. 
  https://bugs.launchpad.net/ubuntu/+source/tboot/+bug/2051347

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