idris-mode : Idris syntax highlighting, compiler-supported editing, and interactive REPL ( https://github.com/idris-hackers/idris-mode )
prop-menu : Compute pop-up menus from text and overlay properties ( https://github.com/david-christiansen/prop-menu-el )
yc : Yet another Canna client on Emacsen ( http://www.ceres.dti.ne.jp/~knak/yc.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a guru
For Paludis use this rsync : rsync://gentoo.zugaina.org/guru-portage
If you have a problem : ycarus(-at-)zugaina.org