cx_Freeze : Create standalone executables from Python scripts ( http://cx-freeze.sourceforge.net )
python-nbxmpp : Python library to use Jabber/XMPP networks in a non-blocking way ( https://dev.gajim.org/gajim/python-nbxmpp )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a decent-im
For Paludis use this rsync : rsync://gentoo.zugaina.org/decent-im-portage
If you have a problem : ycarus(-at-)zugaina.org