anchor.diff:    preFixup = ''
       wrapProgram $out/bin/gnome-calculator \
         --set 'GDK_PIXBUF_MODULE_FILE' "$GDK_PIXBUF_MODULE_FILE" \
  +      --set 'GSETTINGS_BACKEND' 'dconf' \
  +      --prefix 'GIO_EXTRA_MODULES' : "${dconf}/lib/gio/modules" \
         --prefix 'XDG_DATA_DIRS' : "$GSETTINGS_SCHEMAS_PATH" \
  +      --prefix 'XDG_DATA_DIRS' : "$out/share" \
         --prefix 'XDG_DATA_DIRS' : "$XDG_ICON_DIRS"
     '';
   
  
positive.code: 
    buildInputs = [
      adwaita-icon-theme
      bash
      gdk-pixbuf
      glib
      gmp
  
negative.code: , makeWrapper
  
  , adwaita-icon-theme
  , dconf
  , gdk-pixbuf
  , glib
  , gmp
  