NIXPKG1 http://nix.cs.uu.nl/dist/nix/nixpkgs-0.11/MANIFEST hello-2.1.1 x86_64-linux /nix/store/p0zdg9h0l4f4bfhd9kbafflgfmdy3n1x-hello-2.1.1.drv /nix/store/a2ss84n5rzgvwy8q66saysgqzb09nw2h-hello-2.1.1