anchor.diff:      runHook preInstall
       mkdir -p $out/share/themes
       cp -a Venta* $out/share/themes
  -    rm $out/share/themes/*/COPYING
       runHook postInstall
     '';
   
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "venta";
    version = "2020-08-20";
  
    src = fetchFromGitHub {
      owner = "darkomarko42";
      repo = pname;
      rev = "f9b7ea560def5c9d25a14015d265ba559d3501ca";
      sha256 = "13rdavspz1q3zk2h04jpd77hxdcifg42kd71qq13ryg4b5yzqqgb";
    };
  
    buildInputs = [
  
negative.code: { lib
  , stdenv
  , fetchFromGitHub
  , gdk-pixbuf
  , gtk-engine-murrine
  