Source

Here you can download the source code

Ebuild

Here an overlay for gentoo:

-> ruby-libnotify-0.2.0.tar.bz2

-> ruby-libnotify-0.3.0.tar.bz2

-> ruby-libnotify-0.3.1.tar.bz2

-> ruby-libnotify-0.3.2.tar.bz2

-> ruby-libnotify-0.3.3.tar.bz2

Extract ruby-libnotify-_VERSION_.tar.bz2 in /usr/local/portage