MarsSeed [1] filed a deletion request for slingscold [2]: Broken, unbuildable. Discontinued since 2013.
There's a gtk3 based newer fork: https://aur.archlinux.org/packages/slingswarm [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/slingscold/
