[Bug 1536081] Re: libsdl2:i386 isn't installable on 64-bit systems with newer graphics stack

[Vlad Orlov]

One more test to make sure everything works with the default Trusty stack as well.
Install the default Trusty packages for xorg and mesa/wayland, replacing Xenial ones:

$ sudo apt-get install libwayland-egl1-mesa libwayland-egl1-mesa:i386
xserver-xorg xserver-xorg-core xserver-xorg-video-all xserver-xorg-
input-all virtualbox-guest-x11 virtualbox-guest-dkms virtualbox-guest-
utils

All went good, both libsdl2-2.0-0 and libsdl2-2.0-0:i386 were left
intact.

----

Since it's a VM, explicit installation of virtualbox-guest-* packages is
needed. Changing the graphics stack removes lts-xenial guest additions
packages, but the default ones aren't pulled in automatically. This part
isn't needed on baremetal of course.

** Tags removed: verification-needed verification-needed-trusty
** Tags added: verification-done verification-done-trusty

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https://bugs.launchpad.net/bugs/1536081

Title:
  libsdl2:i386 isn't installable on 64-bit systems with newer graphics
  stack

Status in libsdl2 package in Ubuntu:
  Fix Released
Status in libsdl2 source package in Trusty:
  Fix Committed

Bug description:
  [Impact] 
  * People can't use libsdl2 multiarch libraries when lts-* stacks are installed

  [Test Case]
  * Install libsdl2 and libsdl2:i386 with *-mesa-lts-* stacks

  [Regression Potential] 
  * None, this is a one-time runtime relax fix, that is just needed here
  (xenial has a replacement for the binaries, not new packages, and hwe stack replaces the previous one).

  Only trusty is affected, and this just relax such dependency because
  of the new packages introduced.

  [Other info]
  Basically, I need libsdl2:i386 for witcher2, but I can't because when I try to install it this happens

  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  Some packages could not be installed. This may mean that you have
  requested an impossible situation or if you are using the unstable
  distribution that some required packages have not yet been created
  or been moved out of Incoming.
  The following information may help to resolve the situation:

  The following packages have unmet dependencies:
   libsdl2-2.0-0:i386 : Depends: libwayland-egl1-mesa:i386 (>= 10.0.2) or
                                 libwayland-egl1:i386
  E: Unable to correct problems, you have held broken packages

  I am on nvidia drivers, so obviously I cant use mesa.

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