anchor.diff:      owner = "Byron";
       repo = "dua-cli";
       rev = "v${version}";
  -    sha256 = "sha256-FiTjN4coOJZ3Uu9LfaJxcpvVKS+5MVYWQPmwllBh1Jg=";
  +    sha256 = "sha256-zlXv5RY/JRDS2vzC/LhSumZX+OOeaFoOmLq5TaulGDY=";
       # Remove unicode file names which leads to different checksums on HFS+
       # vs. other filesystems because of unicode normalisation.
       postFetch = ''
  
positive.code: 
  rustPlatform.buildRustPackage rec {
    pname = "dua";
    version = "2.17.7";
  
    buildInputs = lib.optionals stdenv.isDarwin [ libiconv Foundation ];
  
  
negative.code:     '';
    };
  
    cargoSha256 = "sha256-PSAhRUODedmJg67K00W0RQ5LycMme2bidL4L8gd6qkw=";
  
    doCheck = false;
  
  