anchor.diff:  { stdenv, fetchFromGitHub, meson, ninja, gettext, python3,
     pkgconfig, libxml2, json-glib , sqlite, itstool, librsvg,
  -  vala, gnome3, desktop-file-utils, wrapGAppsHook, gobject-introspection
  +  vala, gtk3, gnome3, desktop-file-utils, wrapGAppsHook, gobject-introspection
   }:
   
   stdenv.mkDerivation rec {
  
positive.code:     patchShebangs meson_post_install.py
    '';
  
    meta = {
      homepage = https://fontmanager.github.io/;
      description = "Simple font management for GTK+ desktop environments";
      longDescription = ''
  
negative.code:     json-glib
      sqlite
      librsvg
      gtk3
      gnome3.adwaita-icon-theme
    ];
  
  