NIXPKG1 http://nixos.org/releases/nixpkgs/nixpkgs-0.12/MANIFEST mktemp-1.6 x86_64-linux /nix/store/ppr90941amg3pkgd5gxpkbrxmabfiv0j-mktemp-1.6.drv /nix/store/qqm72xd1rmzhzvhk8ibvqqwx4d75skd5-mktemp-1.6