xdg-utils : Portland utils for cross-platform/cross-toolkit/cross-desktop interoperability ( http://portland.freedesktop.org/ )
xprintidle : Prints user's X server idle time in milliseconds ( https://github.com/lucianposton/xprintidle )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a didactic-duck
For Paludis use this rsync : rsync://gentoo.zugaina.org/didactic-duck-portage
If you have a problem : ycarus(-at-)zugaina.org