anchor.diff:    cargoDeps = rustPlatform.fetchCargoTarball {
       inherit src;
       name = "${pname}-${version}";
  -    sha256 = "sha256-KNx7c5Jc1AWIpldMQ1AcWYuMb4W+yLY/cgB87hzPuVY=";
  +    hash = "sha256-SXC0UqWjWqLlZvKCRBylSX73r4Vale130KzS0zM8gjQ=";
     };
   
     propagatedBuildInputs = [
  
positive.code:     owner = "qiskit";
      repo = pname;
      rev = version;
      sha256 = "sha256-spKLPUlUXBmnIo/rnBPUFf72Vxd53xFhh409KzytpkI=";
    };
  
    nativeBuildInputs = [ setuptools-rust ] ++ (with rustPlatform; [ rust.rustc rust.cargo cargoSetupHook ]);
  
negative.code: 
  buildPythonPackage rec {
    pname = "qiskit-terra";
    version = "0.21.0";
  
    disabled = pythonOlder "3.7";
  
  