Good evening,
Funny I should find this post as I am looking for a fix to the same lacking in saucy. If the SL installer is a .deb package, the control file needs to be updated. It would be good to alert the SL devs and let them know. I have/had the same issue with Google Earth. Extract your .deb package, enter the package directory and then the DEBIAN directory where you will see a file called control. Open it with your text editor (gedit, leafpad, etc) and find the Depends: line. Mine looked like this:
Depends: lsb-core (>= 3.2), ia32libs
I changed that to:
Depends: lsb-core (>= 3.2), lib32z1, lib32ncurses5, lib32bz2-1.0
Save your file, close your editor and go up out of that directory. Make sure you have fakeroot installed and then open a terminal in that directory. Just to be clear, I was in:
/home/username/Downloads/google-earth-stable_current_amd64/
opened a terminal in:
/home/username/Downloads/
ran the command:
fakeroot dpkg --build google-earth-stable_current_amd64
Let the build finish and then you can install your package with gdebi or whatever. I hope this helps.
Have a good one. :matte-motes-smile: