mozilla-fira-otf : Mozilla's typefont Fira ( http://www.mozilla.org/en-US/styleguide/products/firefox-os/typeface/ )
mozilla-fira-ttf : Mozilla's typefont Fira ( http://www.mozilla.org/en-US/styleguide/products/firefox-os/typeface/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a k_f
For Paludis use this rsync : rsync://gentoo.zugaina.org/k_f-portage
If you have a problem : ycarus(-at-)zugaina.org