Our pkgsrc yelp is 2.2.2. (The TODO has yelp-2.4.1.)

yelp doesn't know how to deal with man pages. (Only tested under NetBSD,
because yelp fails to run over network from a Linux box -- will test that
later.)

For example:

 click Index,
 type in "a" for search
 then click on a man page

 or choose new window
 then "Manual pages"
 then click on a category
 and then a manual

It will say something like:

  I don't know how to find the document "awk" on your system.

(It also probably doesn't see /usr/pkg/man.)

I haven't looked at this closely.

   Jeremy C. Reed
   http://bsd.reedmedia.net/