anchor.diff:    ++ lib.optionals mateSupport [ gtk3 marco ]
     ++ lib.optional telegramSupport zip;
   
  -  buildInputs = [
  -    gdk-pixbuf
  -    librsvg
  +  # GTK2 engines must be on the system path at runtime to be loaded.
  +  propagatedUserEnvPkgs = [
  +    gtk2
  +    gtk-engine-murrine
     ];
  -
  -  propagatedUserEnvPkgs = [ gtk-engine-murrine ];
   
     postPatch = "patchShebangs .";
   
  
positive.code:     sha256 = "1sqmydvx36f6r4snw22s2q4dvcyg30jd7kg7dibpzqn3njfkkfag";
    };
  
    preferLocalBuild = true;
  
    nativeBuildInputs = [
      autoreconfHook
      pkg-config
  
negative.code: { lib, stdenv, fetchFromGitLab, autoreconfHook, pkg-config, parallel
  , sassc, inkscape, libxml2, glib, gtk2, gtk-engine-murrine
  , cinnamonSupport ? true
  , gnomeFlashbackSupport ? true
  , gnomeShellSupport ? true
  