>>       You need to install 32-bit pulse-audio.
> Well, the problem is that these old Skype binaries depend on old versions of
> other 32-bit libraries no longer available, causing dependency issues. In my
> install effort that was the main problem.

     I could install it without problem on an amd64 laptop with 
Devuan-Jessie.

     The only issue is that the sound system doesn't find the 
microphone, which makes the whole unusable except for chat. I could 
probably find the driver for the microphone somewhere but I didn't want 
to spend time on that; I've another laptop.

     Didier