anchor.diff:        owner = "lu-zero";
         repo = pname;
         rev = "v${version}";
  -      sha256 = "1rvbikhbqsfa2sh79kapqg4yz19r1yhqfykl6cf4yjg6vawkwfw1";
  +      sha256 = "0fd0xql5cbqgmir2z3ah91iasaq9133wmi5bnhiy3dv7drcqv4rc";
       };
       cargoLock = fetchurl {
         url = "https://github.com/lu-zero/${pname}/releases/download/v${version}/Cargo.lock";
  -      sha256 = "17cdac8ym59jwjxs3k4isazknhrlr6lw0j0r76n5xf0dd7apfgcs";
  +      sha256 = "1xlh3h77rxhqyr1nkqyanb120lwdks6fklh202camqpmznd763g5";
       };
   
       installPhase = ''
  
positive.code:     '';
    };
  
    cargoSha256 = "0pxakfiidxfczh3harnjhb1zv340r812jxzwam8z2kyw3mkyhh8z";
  
    nativeBuildInputs = [ pkg-config ];
    buildInputs = [ openssl ]
  
negative.code: 
  rustPlatform.buildRustPackage rec {
    pname = "cargo-c";
    version = "0.8.1";
  
    src = stdenv.mkDerivation rec {
      name = "${pname}-source-${version}";
  