anchor.diff:  
   rustPlatform.buildRustPackage rec {
     pname = "cargo-c";
  -  version = "0.7.3";
  +  version = "0.8.0";
   
     src = stdenv.mkDerivation rec {
       name = "${pname}-source-${version}";
  
positive.code:       owner = "lu-zero";
        repo = pname;
        rev = "v${version}";
        sha256 = "0df87kx8dfq2fvz00k6advwg2iw9djkflhrbsjw0xhac78623c56";
      };
      cargoLock = fetchurl {
        url = "https://github.com/lu-zero/${pname}/releases/download/v${version}/Cargo.lock";
        sha256 = "18l54jf9q5xb908bwyyil1sblxxa9mkrgr33gm0r6nxicw6kf8in";
      };
  
      installPhase = ''
  
negative.code:     '';
    };
  
    cargoSha256 = "1rmhg9xhljgd5yq3xs0fzw1b0bgz7jfpf5mr2gviwqahl5vxvfiq";
  
    nativeBuildInputs = [ pkg-config ];
    buildInputs = [ openssl ]
  