anchor.diff:      runHook preInstall
   
       mkdir -p $out/share/icons
  -    mv kora* $out/share/icons/
  +    cp -a kora* $out/share/icons/
  +    rm $out/share/icons/kora*/create-new-icon-theme.cache.sh
   
       for theme in $out/share/icons/*; do
         gtk-update-icon-cache -f $theme
  
positive.code: { lib, stdenvNoCC, fetchFromGitHub , gtk3, adwaita-icon-theme, breeze-icons, hicolor-icon-theme }:
  
  stdenvNoCC.mkDerivation rec  {
    pname = "kora-icon-theme";
    version = "1.5.2";
  
    src = fetchFromGitHub  {
      owner = "bikass";
      repo = "kora";
      rev = "v${version}";
      sha256 = "sha256-OwuePPn4seHbzv81pnTEP1Q0Tp1ywZIEmw+dx3bDoXw=";
    };
  
    nativeBuildInputs = [
  
negative.code:     runHook postInstall
    '';
  
    passthru.updateScript = gitUpdater {
      inherit pname version;
      rev-prefix = "v";
    };
  
    meta = with lib; {
      description = "An SVG icon theme in four variants";
      homepage = "https://github.com/bikass/kora";
      license = with licenses; [ gpl3Only ];
      platforms = platforms.linux;
      maintainers = with maintainers; [ romildo ];
    };
  }
  