anchor.diff:  
     preFixup = ''
       wrapProgram $out/libexec/gnome-session-binary \
  +      --set 'GSETTINGS_BACKEND' 'dconf' \
  +      --prefix 'GIO_EXTRA_MODULES' : "$GIO_EXTRA_MODULES" \
         --prefix 'GI_TYPELIB_PATH' : "$GI_TYPELIB_PATH" \
         --prefix 'XDG_DATA_DIRS' : "$GSETTINGS_SCHEMAS_PATH" \
         --prefix 'XDG_DATA_DIRS' : "$out/share" \
  
positive.code: , makeWrapper
  
  , adwaita-icon-theme
  , gdk-pixbuf
  , glib
  , gnome-desktop
  
negative.code: 
    buildInputs = [
      adwaita-icon-theme
      dbus-glib
      dconf
      gconf
      gdk-pixbuf
      glib
      gnome-desktop
  