anchor.diff: -{ lib, stdenv, fetchFromGitHub, gtk-engine-murrine }:
  +{ lib
  +, stdenv
  +, fetchFromGitHub
  +, gtk-engine-murrine
  +, jdupes
  +}:
   
   stdenv.mkDerivation rec {
     pname = "nordic";
  
positive.code:     mv -v $out/share/themes/Nordic/kde/sddm/* $out/share/sddm/themes/Nordic/
      rm -rf $out/share/themes/Nordic/kde
  
      runHook postInstall
    '';
  
  
negative.code: 
    sourceRoot = ".";
  
    nativeBuildInputs = [ jdupes ];
  
    propagatedUserEnvPkgs = [ gtk-engine-murrine ];
  
    installPhase = ''
  