My fault, i was focused on modular-xorg package.
OK, installing /pkgsrc/x11/xinit fixed the problem. It works as normal user, twm starts.
Jeremy C. Reed wrote:
Well i have updated pkgsrc an hour ago, and did make clean ; make replace to reinstall xorg, but it didn't create /usr/pkg/bin/startx file. The only startx is under /usr/X11R6/binInstall pkgsrc/x11/xinit package and use correct startx.