NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST cron-4.1 i686-linux /nix/store/jb3laks9k9qzc0pl51rdg1bb8kk21ngj-cron-4.1.drv /nix/store/dq4p09bfkr257lcbddlqq2imhgmkfsl2-cron-4.1