Can you please have a look if virtual/awk is sufficient or if gawk is needed.
awk is used in nxdialog, nxloadconfig, nxnode, nxprint and nxserver, but everything is posix-conform, so virtual/awk is fine.
+ 02 Mar 2013; Christoph Junghans <ottxor@gentoo.org> + nxserver-freenx-0.7.3_p104-r6.ebuild: + switched to virtual/awk (bug #455676) + added user.eclass due to enewuser
Thanks for checking and fixing this (february was quite busy for me)