Bug#873665: Cannot install steam (related to libgl1-mesa-dri:i386, libllvm4.0:i386)

[Jannis Teunissen]

Source: steam
Version: 1.0.0.54-2
Severity: important

Dear Maintainer,

   * What led up to the situation?

Trying to install steam

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

Here are the commands I tried followed by the errors:

1. apt install steam

The following packages have unmet dependencies:
steam:i386 : Depends: libgl1-mesa-dri:i386 but it is not going to be installed

2. apt install libgl1-mesa-dri:i386

libgl1-mesa-dri:i386 : Depends: libllvm4.0:i386 (>= 1:4.0~) but it is not going to be installed

3. apt install libllvm4.0:i386

The following packages will be REMOVED:
  doxygen libclang-common-4.0-dev libclang1-4.0 libclc-amdgcn libclc-r600
  libgl1-mesa-dri libllvm4.0 libxatracker2 mesa-opencl-icd mesa-va-drivers
  mesa-vdpau-drivers task-desktop task-xfce-desktop vdpau-driver-all xorg
  xserver-xorg-video-all xserver-xorg-video-vmware

Removing these packages seems like a bad idea.

   * What was the outcome of this action?

Didn't work

   * What outcome did you expect instead?

That steam would be installed.

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.12.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)