I've created a package in aur: https://aur.archlinux.org/packages.php?ID=49250
You can install it with: yaourt or packer -S gnome-shell-system-monitor-applet-git
Install git if you don't have it: (sudo apt-get install git-core, sudo pacman -S git, etc) Then :
mkdir ~/git_projects
cd ~/git_projects
git clone git://github.com/paradoxxxzero/gnome-shell-system-monitor-applet.git
mkdir -p ~/.local/share/gnome-shell/extensions
cd ~/.local/share/gnome-shell/extensions
ln -s ~/git_projects/gnome-shell-system-monitor-applet/[email protected]
Then install the schema (important) replace /usr/share/glib-2.0/schemas with /usr/local/share/glib-2.0/schemas if your prefix is /usr/local
sudo cp ~/git_projects/gnome-shell-system-monitor-applet/org.gnome.shell.extensions.system-monitor.gschema.xml /usr/share/glib-2.0/schemas
cd /usr/share/glib-2.0/schemas
sudo glib-compile-schemas . # Don't forget the dot!
And restart gnome-shell (Alt + F2 -> r) or reboot.
Copyright (C) 2011 Florian Mounier aka paradoxxxzero
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.