NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST xscreensaver-5.07 i686-linux /nix/store/w462vb7p3ikqgmdsnx04skpfqnzns0m4-xscreensaver-5.07.drv /nix/store/crlj7x0n1jc52jlvd94frkh0pv8lmacw-xscreensaver-5.07