ewmh : An implementation of Extended Window Manager Hints, based on Xlib ( https://github.com/parkouss/pyewmh https://pypi.python.org/pypi/ewmh )
petsc4py : Python bindings for PETSc ( https://bitbucket.org/petsc/petsc4py )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a seeds
For Paludis use this rsync : rsync://gentoo.zugaina.org/seeds-portage
If you have a problem : ycarus(-at-)zugaina.org