These ebuilds come from http://overlays.gentoo.org/proj/science/wiki/en.
If you have some problems, go to the official site first.
py-swish-e : Python API for swish-e ( http://py-swish-e.berlios.de/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a science
For Paludis use this rsync : rsync://gentoo.zugaina.org/science-portage
If you have a problem : ycarus(-at-)zugaina.org