anchor.diff:      owner = "Qiskit";
       repo = "qiskit";
       rev = version;
  -    sha256 = "0liby6ffgrla6wr4k742qkg8m80im372p6hmr4gkz47nmc76zy1i";
  +    sha256 = "1r23pjnql49gczf4k4m6ir5rr95gqdxjrks60p8a93d243mxx3c9";
     };
   
     propagatedBuildInputs = [
  
positive.code: buildPythonPackage rec {
    pname = "qiskit";
    # NOTE: This version denotes a specific set of subpackages. See https://qiskit.org/documentation/release_notes.html#version-history
    version = "0.19.6";
  
    disabled = pythonOlder "3.5";
  
  
negative.code: 
    checkInputs = [ pytestCheckHook ];
    dontUseSetuptoolsCheck = true;
  
    pythonImportsCheck = [
      "qiskit"
      "qiskit.aqua"
      "qiskit.circuit"
      "qiskit.ignis"
      "qiskit.providers.aer"
    ];
  
    meta = with lib; {
      description = "Software for developing quantum computing programs";
      homepage = "https://qiskit.org";
      downloadPage = "https://github.com/QISKit/qiskit/releases";
      changelog = "https://qiskit.org/documentation/release_notes.html";
      license = licenses.asl20;
      maintainers = with maintainers; [ drewrisinger pandaman ];
    };
  }
  