anchor.diff:  , mkDerivation
   , fetchFromGitHub
   , cmake
  +, extra-cmake-modules
   , qtbase
   , qtquickcontrols2
   , SDL
  
positive.code:     platforms = platforms.linux;
    };
  }
  
  
negative.code: 
  mkDerivation rec {
    pname = "sfxr-qt";
    version = "1.4.0";
  
    src = fetchFromGitHub {
      owner = "agateau";
      repo = "sfxr-qt";
      rev = version;
      sha256 = "sha256-Mn+wcwu70BwsTLFlc12sOOe6U1AJ8hR7bCIPlPnCooE=";
      fetchSubmodules = true;
    };
  
    nativeBuildInputs = [
      cmake
      extra-cmake-modules
      (python3.withPackages (pp: with pp; [ pyyaml jinja2 setuptools ]))
    ];
  
    buildInputs = [
      qtbase
      qtquickcontrols2
  