[Bug 2100880] Re: do-release-upgrade container from Oracular to Plucky brings down all packages

[Nick Rosbrook]

This is due to a recent change I made. I will just revert the change for
now.

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https://bugs.launchpad.net/bugs/2100880

Title:
  do-release-upgrade container from Oracular to Plucky brings down all
  packages

Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged

Bug description:
  Hello,

  I wanted to experiment with a plucky container and since I forgot I could use ubuntu-daily:plucky
  I went with a oracular container and thought I would simply use do-release-upgrader to upgrade to plucky

  
  $> lxc launch ubuntu:24.10 test-plucky
  $> lxc exec test-plucky /bin/bash
  $> do-release-upgrade -d

  To my surprise when I ran : "do-release-upgrade -d" on my oracular
  container it started downloading thousands of packages including
  gnome-desktop, xserver and even installed the firefox snap

  Once all set and done, I went from 617 packages to 1565

  So this is either a bug and we should be able to use do-release-
  upgrade to go from any release to the next on desktop, server, cloud
  and container and only change the subset of packages installed (my
  preference)

  Of this isn't supported and we should probably not allow it.

  Thx

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