anchor.diff:  }:
   
   stdenv.mkDerivation rec {
  -  name = "nix-2.0.2";
  +  name = "nix-2.0.4";
   
     src = fetchurl {
       url = "https://nixos.org/releases/nix/${name}/${name}.tar.xz";
  -    multihash = "QmecUivPEb8TNiXz64tE7Q2rNtK6m8DE5fyXGMasRdUGHT";
  -    sha256 = "2d2984410f73d759485526e594ce41b9819fafa4676f4f85a93dbdd5352a1435";
  +    multihash = "Qmdf1xu1r8ifDjVkq5gNbxUBS2c3JpJ8XxqBe1BvVacN15";
  +    sha256 = "166540ff7b8bb41449586b67e5fc6ab9e25525f6724b6c6bcbfb0648fbd6496b";
     };
   
     buildInputs = [
  
positive.code:     xz
    ];
  
    # Make sure we have a working busybox sh
    postPatch = ''
      '${busybox}'/bin/busybox sh --help 2>&1 | grep -q 'Usage: sh'
    '';
  
  
negative.code: { stdenv
  , config
  , fetchTritonPatch
  , fetchurl
  , lib
  
  