anchor.diff:  
     preConfigure = ''
       mkdir dist
  -    cp {misc,dist}/DisplayCAL.appdata.xml
  +    cp {misc,dist}/net.displaycal.DisplayCAL.appdata.xml
  +    touch dist/copyright
       mkdir -p $out
       ln -s $out/share/DisplayCAL $out/Resources
     '';
  
positive.code:     argyllcms
      wxPython
      numpy
    ];
  
    nativeBuildInputs = [
  
negative.code:  }:
  
  let
    inherit (python2.pkgs) buildPythonApplication wxPython numpy dbus-python;
  in buildPythonApplication rec {
    pname = "displaycal";
    version = "3.8.9.3";
  
    enableParallelBuilding = true;
  
    src = fetchurl {
      url = "mirror://sourceforge/project/dispcalgui/release/${version}/DisplayCAL-${version}.tar.gz";
      sha256 = "1sivi4q7sqsrc95qg5gh37bsm2761md4mpl89hflzwk6kyyxyd3w";
    };
  
    propagatedBuildInputs = [
  