NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST gnome-panel-2.22.1.1 i686-linux /nix/store/54yiqjxwy93dr7sx1nbr164hbpgd0ca6-gnome-panel-2.22.1.1.drv /nix/store/bvyxbsagb51fc654si8b1vxh6v2zg08m-gnome-panel-2.22.1.1