OK, so I've run out of patience in my flailing around. All I want is
to run a headless image on a Mac (so I can unbreak the SqueakTrunk-OSX
job, which _used_ to work).

How? Do I say
  "-headless"? ("could not find module vm-display-X11")
  "-vm-display-null -headless"? ("squeak: could not find any sound driver")
  "-vm-sound-null -vm-display-null -headless"? ("could not find module
vm-sound-null")

I don't mind whether I use Cog or Interpreter, as long as I can just
get an image running tests.

Thanks!

frank