[Bug 2104920] Re: Installing libsdl2-dev:i386 purges important system files

[Lukas Märdian]

Thanks Simon, for providing a workaround!

So with this knowledge (aptitude and solver3.0 working), this doesn't
seem to be a packaging issue, but rather an issue with the legacy apt
solver. Therefore, I'm adding a bug task for apt.

BTW: Another workaround seems to be forcing the legacy apt solver to
keeping "ubuntu-minimal" around, e.g.:

$ apt install libsdl2-dev:i386 ubuntu-minimal+
[...]
129 upgraded, 294 newly installed, 0 to remove and 151 not upgraded.

** Also affects: apt (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: apt (Ubuntu)
       Status: New => Triaged

** Changed in: apt (Ubuntu)
   Importance: Undecided => Low

** Changed in: libsdl2 (Ubuntu)
       Status: Triaged => Invalid

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Title:
  Installing libsdl2-dev:i386 purges important system files

Status in apt package in Ubuntu:
  Triaged
Status in libsdl2 package in Ubuntu:
  Invalid

Bug description:
  
  The command: sudo apt install libsdl2-dev:i386  (on a 64bit ubuntu system) leads to the following being uninstalled: 

    apport apport-core-dump-handler apport-gtk aptdaemon cloud-init
    command-not-found gdm3 gnome-control-center gnome-shell
    gnome-shell-extension-appindicator gnome-shell-extension-desktop-icons-ng
    gnome-shell-extension-ubuntu-dock
    gnome-shell-extension-ubuntu-tiling-assistant gnome-terminal hplip ibus
    ibus-table ibus-table-cangjie-big ibus-table-cangjie3 ibus-table-cangjie5
    language-selector-common language-selector-gnome memtest86+
    nautilus-extension-gnome-terminal netplan.io network-manager
    network-manager-config-connectivity-ubuntu network-manager-gnome
    network-manager-openvpn network-manager-openvpn-gnome network-manager-pptp
    network-manager-pptp-gnome networkd-dispatcher nvidia-settings orca
    os-prober power-profiles-daemon python3-apport python3-aptdaemon
    python3-aptdaemon.gtk3widgets python3-brlapi python3-cairo
    python3-cffi-backend python3-commandnotfound python3-cryptography
    python3-cups python3-cupshelpers python3-dbus python3-distupgrade
    python3-gdbm python3-gi python3-ibus-1.0 python3-jinja2 python3-jsonschema
    python3-launchpadlib python3-lazr.restfulclient python3-markupsafe
    python3-netifaces python3-netplan python3-oauthlib python3-pil
    python3-pyrsistent python3-software-properties python3-sss python3-systemd
    python3-update-manager python3-yaml screen-resolution-extra
    software-properties-common software-properties-gtk sssd sssd-ad
    sssd-ad-common sssd-common sssd-ipa sssd-krb5 sssd-krb5-common sssd-ldap
    sssd-proxy system-config-printer-common system-config-printer-udev
    ubuntu-advantage-desktop-daemon ubuntu-desktop-minimal ubuntu-minimal
    ubuntu-pro-client ubuntu-pro-client-l10n ubuntu-release-upgrader-core
    ubuntu-release-upgrader-gtk ubuntu-session unattended-upgrades
    update-manager update-manager-core update-notifier update-notifier-common
    xorg xserver-xorg

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: libsdl2-dev:i386 (not installed)
  ProcVersionSignature: Ubuntu 6.11.0-21.21~24.04.1-generic 6.11.11
  Uname: Linux 6.11.0-21-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.28.1-0ubuntu3.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Mar 28 14:25:55 2025
  InstallationDate: Installed on 2025-03-28 (0 days ago)
  InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
  ProcEnviron:
   LANG=sv_SE.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: libsdl2
  UpgradeStatus: No upgrade log present (probably fresh install)

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