anchor.diff:        owner = "lu-zero";
         repo = pname;
         rev = "v${version}";
  -      sha256 = "0df87kx8dfq2fvz00k6advwg2iw9djkflhrbsjw0xhac78623c56";
  +      sha256 = "1rvbikhbqsfa2sh79kapqg4yz19r1yhqfykl6cf4yjg6vawkwfw1";
       };
       cargoLock = fetchurl {
         url = "https://github.com/lu-zero/${pname}/releases/download/v${version}/Cargo.lock";
  -      sha256 = "18l54jf9q5xb908bwyyil1sblxxa9mkrgr33gm0r6nxicw6kf8in";
  +      sha256 = "17cdac8ym59jwjxs3k4isazknhrlr6lw0j0r76n5xf0dd7apfgcs";
       };
   
       installPhase = ''
  
positive.code: 
  rustPlatform.buildRustPackage rec {
    pname = "cargo-c";
    version = "0.7.3";
  
    src = stdenv.mkDerivation rec {
      name = "${pname}-source-${version}";
  
negative.code:     '';
    };
  
    cargoSha256 = "1rmhg9xhljgd5yq3xs0fzw1b0bgz7jfpf5mr2gviwqahl5vxvfiq";
  
    nativeBuildInputs = [ pkg-config ];
    buildInputs = [ openssl ]
  