I was in your boat more than once.

It's a turd sometimes for a newbie learning to install something that seems like it should be simple enough to do.

If I remember correctly, it took me an hour the first time to get every together for xkbd to be installed. Six months later, when I reflashed my Tablet, it took exactly the same darn time.

I think solution is to have that file on your memory card and install it directly from Xterm.

So download the libxpm4 file from the site mentioned previously, you can rename the file if it will make things easier for you, and then transfer it right there on your external memory card.

In Xterm:
cd /media/mmc2
dpkg -i libxpm4.deb (or whatever the full filename is) ENTER

That should get you over the hump.

Even though you'll never get Fallout working, at least you'll have a virtual keyboard.

For some interesting keyboard designs, you can check out an old post I made.
Xkbd Keyboards

Best of luck.