How widespread is NIS support?

[Andrew Kuchling]

Does anyone have an idea how widespread NIS support is these days?
Patch #103544 changes the 2.1 setup.py script to compile the NIS
module on any Unix platform, and I'm wondering if that's too
ambitious.  Is anyone out there using a Unix *without* NIS?  (Try 'man
yp_get_default_domain' and see if you get anything, for a start.)  Are
the NIS functions part of libc, or in a different library (such as
libnsl on Solaris). 

--amk