Index: BUILDING.txt
===================================================================
--- BUILDING.txt	(revision 4608)
+++ BUILDING.txt	(working copy)
@@ -126,7 +126,7 @@
 the X11 shared libraries provided with the system.  The procedure for this is
 very system-specific, since it requires specifying such things as font and X
 resource directories.  Thus, it cannot be described in terms general enough for
-this document.
+this document. A sketchy guide is given at [1]
 
 Those using systems with older versions of Xorg must build a "legacy-friendly"
 version of the TigerVNC Server.  This is accomplished by downloading and
@@ -164,6 +164,26 @@
 build configuration or module dependencies.
 
 
+
+
+[1] sketchy guide: building tiger vnc server non legacy version (this works for NIXOS linux):
+
+Note: Build the viewer in source directory so that libnetwork.a is found.
+
+# requiring libs like: libX11, libXext, gettext, libICE, libXtst, libXi, libSM
+tar xf XORG_SERVER_SOURCE
+cp -R xorg*/* unix/xserver
+# apply additional xorg server patches
+(
+  cd unix/xserver
+  # apply tigervnc's patch:
+  patch -p1 < ../xserver19.patch
+  autoreconf -vfi
+  ./configure --prefix=$out --disable-xinerama --disable-xvfb --disable-xnest --disable-xorg --disable-dmx --disable-dri --disable-dri2 --disable-glx
+  make TIGERVNC_SRCDIR=`pwd`/../..
+  popd
+)
+
 Visual C++ (Command Line)
 -------------------------