NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST kcachegrind-0.4.6 x86_64-linux /nix/store/qjz72m2r3r5y3pj7l2834wvsm69qas57-kcachegrind-0.4.6.drv /nix/store/in72rds7kwr7l4h08v9wmh48q7wcymaf-kcachegrind-0.4.6