I'd like to see PRISM http://www.cs.bham.ac.uk/~dxp/prism/ in Portage. They just recently released 3.0, and as far as I can tell it's solid on x86. I don't have anything else to test it on, but it's pretty vanilla except for the Java GUI, which may only work with the Sun JDK. This would go in "sci-mathematics". Is there a "simple" guide to creating an ebuild? I'd like to attempt to write one for this package.
No progress for over 1 year, closing WONTFIX. Feel free to reopen with an ebuild.