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

[Jeremy Bicha]

Public bug reported:

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.)

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1747033

Title:
  transitional package dependency shouldn't be auto-removable

Status in apt 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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