NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST procps-3.2.7 x86_64-linux /nix/store/lzsql6hppfya7y6028bz39qhq112k8c0-procps-3.2.7.drv /nix/store/xdax001qs85v3wiswrs6wcalcpd7rmc9-procps-3.2.7