[Bug 1857018] Re: apt-get: Can not downgrade dependencies or anything with -t

[Jarno Suni]

Oh, I do not need to do separate marking to auto. It seems like the apt
install command retains the auto status even if the auto packages are
listed in command line, if the package which depends on the auto
package, is installed, too. (at least with apt 1.6.12)

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Title:
   apt-get: Can not downgrade dependencies or anything with -t

Status in apt package in Ubuntu:
  Invalid

Bug description:
  Only the latter command downgrades the mythtv-frontend package (after
  removing the PPA from /etc/apt/sources.list.d/ and running 'apt
  update'):

  $ sudo apt-get install mythtv-frontend -s -V -t bionic
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  mythtv-frontend is already the newest version (2:30.0+fixes.201912012038.a27754a~ubuntu18.04.1).
  0 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.

  $ sudo apt-get install mythtv-frontend/bionic -s -V
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  Selected version '2:29.1+fixes.20180414.329c235-0ubuntu3' (Ubuntu:18.04/bionic [amd64]) for 'mythtv-frontend'
  Suggested packages:
     mythtv-backend (2:29.1+fixes.20180414.329c235-0ubuntu3)
     mythmusic (2:29.1+fixes.20180414.329c235-0ubuntu3)
     mythweather (2:29.1+fixes.20180414.329c235-0ubuntu3)
     mythgallery (2:29.1+fixes.20180414.329c235-0ubuntu3)
     mythgame (2:29.1+fixes.20180414.329c235-0ubuntu3)
  The following packages will be REMOVED:
     mythtv-dbg (2:30.0+fixes.201912012038.a27754a~ubuntu18.04.1)
  The following packages will be DOWNGRADED:
     mythtv-frontend (2:30.0+fixes.201912012038.a27754a~ubuntu18.04.1 => 2:29.1+fixes.20180414.329c235-0ubuntu3)
  0 upgraded, 0 newly installed, 1 downgraded, 1 to remove and 4 not upgraded.
  Remv mythtv-dbg [2:30.0+fixes.201912012038.a27754a~ubuntu18.04.1]
  Inst mythtv-frontend [2:30.0+fixes.201912012038.a27754a~ubuntu18.04.1] (2:29.1+fixes.20180414.329c235-0ubuntu3 Ubuntu:18.04/bionic [amd64])
  Conf mythtv-frontend (2:29.1+fixes.20180414.329c235-0ubuntu3 Ubuntu:18.04/bionic [amd64])

  I do not know, if there is a reason for the different behavior.
  Anyway, I want to be able to easily downgrade the depending packages, too, retaining their auto/manual status.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: apt 1.6.12
  ProcVersionSignature: Ubuntu 5.0.0-37.40~18.04.1-generic 5.0.21
  Uname: Linux 5.0.0-37-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.20.9-0ubuntu7.9
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Dec 19 16:25:51 2019
  InstallationDate: Installed on 2019-05-08 (224 days ago)
  InstallationMedia: Xubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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