because of these rows in /usr/bin/tazwok

	# Desktop entry (.desktop).
	if [ -d "$_pkg/usr/share/applications" ]; then
		cp -a $_pkg/usr/share/applications $fs/usr/share
	fi
	# Homemade desktop file(s) can be in stuff.
	if [ -d "stuff/applications" ]; then
		mkdir -p $fs/usr/share
		cp -a stuff/applications $fs/usr/share
	fi
	if [ -f "stuff/$PACKAGE.desktop" ]; then
		mkdir -p $fs/usr/share/applications
		cp -a stuff/$PACKAGE.desktop $fs/usr/share/applications
	fi

and of these row in the receipt

	cd $fs/usr/share/pixmaps
	rm ../epdfview/pixmaps/icon_epdfview-24.png
	rm ../epdfview/pixmaps/icon_epdfview-48.png
	ln -s ../epdfview/pixmaps/icon_epdfview-32.png epdfview.png

epdfview-cups genpkg produce a no icon desktop file:
the first tazwok if copy in $fs/usr/share/applications the original desktop file who refers to icon_epdfview-48.png , which has been deleted
the second tazwok if does nothing because stuff/applications does not exist
the third tazwok if does nothing because the desktop file in stuff is epdfview.desktop while the PACKAGE variable contains epdfview-cups .

Solutions:
1) create a applications subdir in stuff and move the provided desktop file in it, so with the second if tazwok will owerwrite the original desktop file whith the provided one
2) modify the third if in tazwok to catch stuff/*.desktop. it should be very probably that a desktop file in stuff is there to go in $fs/usr/share/applications :-)

I chose first solution and it works ;-)