anchor.diff:        owner = "lu-zero";
         repo = pname;
         rev = "v${version}";
  -      sha256 = "1dh5z210nl8grjxb8zxch8h7799w61bah7r2j0s07091rcpfsrsb";
  +      sha256 = "0pd1vnpy29fxmf47pvkyxd6bydar8cykfjx0f1bbw3gfk7vychbj";
       };
       cargoLock = fetchurl {
         url = "https://github.com/lu-zero/${pname}/releases/download/v${version}/Cargo.lock";
  -      sha256 = "1h5wmfmm2a2ilyw3ar88rqm7yvdc2vhyx4pgg781615ax52fhjli";
  +      sha256 = "10xhd5m63r928gfvr4djmis30mra8wdsx55kgin9kiig2kylx69h";
       };
   
       installPhase = ''
  
positive.code: 
  rustPlatform.buildRustPackage rec {
    pname = "cargo-c";
    version = "0.6.18";
  
    src = stdenv.mkDerivation rec {
      name = "${pname}-source-${version}";
  
negative.code:     '';
    };
  
    cargoSha256 = "1axg0kr8xsb5fm3r8qgc7s3g70pa8g9vc68d6icm7ms77phczx4r";
  
    nativeBuildInputs = [ pkg-config ];
    buildInputs = [ openssl ]
  