Comment 4 for bug 1537915

Heheh, Manfred, I like that. You're trying to prove in the end that it's a PEBKAC case after all. But still we can agree it is none...that is, STILL. :-)

andy@andy-lubuntubox:~$ apt-get --simulate --no-install-recommends install libgtk-3-common=3.18.6-1ubuntu1 adwaita-icon-theme
NOTE: This is only a simulation!
      apt-get needs root privileges for real execution.
      Keep also in mind that locking is deactivated,
      so don't depend on the relevance to the real current situation!
Reading package lists... Done
Building dependency tree
Reading state information... Done
adwaita-icon-theme is already the newest version (3.18.0-2ubuntu1).
Some packages could not be installed.
<snip>
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 adwaita-icon-theme : Depends: libgtk-3-bin but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

HEH!
Now it wants libgtk-3-bin first...

Dude, YOU DO KNOW YOUR STUFF!
I take my hat off.

$ sudo apt-get install libgtk-3-bin=3.18.6-1ubuntu1

THAT fixed it.

Still, I think behavior is wrong, because it clearly told about
> libgtk-3-common : Depends: adwaita-icon-theme (>= 3.18) but it is not going to be installed

And adwaita...3.18 was working and installed.
It didn't mention _anything_ about libgtk-3-bin, until you did that sneaky simulation line.

Anyways, it was worth posting here, because I might need that "trick" somewhere else in the future! :)

Thanks again.