• http://www.freedesktop.org/software/polkit/docs/latest/
• http://www.linuxsysadmintutorials.com/configure-polkit-to-run-virsh-as-a-normal-user/
• https://libvirt.org/auth.html#ACL_server_unix_perms
• https://ask.fedoraproject.org/en/question/45805/how-to-use-virt-manager-as-a-non-root-user/

polkit.addRule(function(action, subject) {
  if (action.id == "org.libvirt.unix.manage" && subject.local && subject.active && subject.isInGroup("wheel")) {
      return polkit.Result.YES;
  }
});

export LIBVIRT_DEFAULT_URI=qemu:///system

http://blog.ktz.me/?p=403