anchor.diff: -{ lib, stdenv, fetchFromGitHub, meson, ninja, gtk3, gnome, gnome-icon-theme, hicolor-icon-theme }:
  +{ lib, stdenv, fetchFromGitHub, meson, ninja, gtk3, gnome, gnome-icon-theme, hicolor-icon-theme, jdupes }:
   
   stdenv.mkDerivation rec {
     pname = "paper-icon-theme";
  
positive.code: 
    dontDropIconThemeCache = true;
  
    postInstall = ''
      # The cache for Paper-Mono-Dark is missing
      gtk-update-icon-cache "$out"/share/icons/Paper-Mono-Dark;
    '';
  
    meta = with lib; {
  
negative.code:     meson
      ninja
      gtk3
      jdupes
    ];
  
    propagatedBuildInputs = [
  