Comment 40 for bug 619003

I got this message on trusty 14.04:

    Processing triggers for hicolor-icon-theme (0.13-1) ...

    (gtk-update-icon-cache-3.0:31711): GdkPixbuf-WARNING **: Cannot open pixbuf loader module file '/usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders.cache': No such file or directory

    This likely means that your installation is broken.
    Try running the command
      gdk-pixbuf-query-loaders > /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders.cache
    to make things work again for the time being.

As instructed, I tried and got:

    # gdk-pixbuf-query-loaders > /usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders.cache
    The program 'gdk-pixbuf-query-loaders' is currently not installed. You can install it by typing:
apt-get install libgdk-pixbuf2.0-dev

Taking that hint, if I install libgdk-pixbuf2.0-dev first, then hicolor-icon-theme.postinst no longer complains. So, maybe /usr/bin/gdk-pixbuf-query-loaders belongs in the libgdk-pixbuf2.0 rather than the libgdk-pixbuf2.0-dev package. Furthermore, libgtk-3-bin (which owns the /usr/bin/gtk-update-icon-cache-3.0 command that hicolor-icon-theme.postinst calls) should declare a dependency on it.