[Bug 1747033] Re: transitional package dependency shouldn't be auto-removable

[Jeremy Bicha]

juliank says all we need to fix this is demote gnome-tweak-tool to
universe/oldlibs

** Package changed: apt (Ubuntu) => gnome-tweaks (Ubuntu)

** Summary changed:

- transitional package dependency shouldn't be auto-removable
+ Move gnome-tweak-tool to oldlibs

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Title:
  Move gnome-tweak-tool and gnome-orca to oldlibs

Status in gnome-tweaks package in Ubuntu:
  New
Status in orca package in Ubuntu:
  New

Bug description:
  Test Case
  =========
  1. From Ubuntu 18.04, uninstall gnome-tweaks and gnome-tweak-tool if installed.

  2. Download gnome-tweak-tool from 17.10

  https://launchpad.net/ubuntu/+source/gnome-tweak-
  tool/3.26.2.1-1ubuntu1/+build/13538022

  3. sudo apt install ./gnome-tweak-tool_3.26.2.1-1ubuntu1_all.deb

  4. sudo apt dist-upgrade

  (gnome-tweak-tool is now a transitional package that depends on gnome-
  tweaks).

  5. sudo apt remove gnome-tweak-tool

  6. sudo apt dist-upgrade

  The following package was automatically installed and is no longer required:
    gnome-tweaks
  Use 'sudo apt autoremove' to remove it.

  Excerpts from apt show
  ======================
  $ apt show gnome-tweaks
  Package: gnome-tweaks
  Version: 3.27.4-1ubuntu1
  Priority: optional
  Breaks: gnome-tweak-tool (<= 3.27.4)
  Replaces: gnome-tweak-tool (<= 3.27.4)
  APT-Manual-Installed: no

  $ apt show gnome-tweak-tool
  Package: gnome-tweak-tool
  Version: 3.27.4-1ubuntu1
  Priority: optional
  Section: universe/gnome
  Source: gnome-tweaks
  Depends: gnome-tweaks
  Description: adjust advanced settings for GNOME - transitional package
   GNOME Tweak Tool allows the adjustment of several advanced GNOME
   options that can't be configured in gnome-control-center.
   .
   This package is here to ensure smooth upgrades. It can be removed when
   you see fit.

  What's Wrong
  ============
  I think that "APT-Manual-Installed: no" should not be set for gnome-tweaks.

  Hmm, gnome-tweak-tool should be universe/oldlibs now. (Debian also
  currently has it in 'gnome' instead of oldlibs.)

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