anchor.diff:  { stdenv
   , lib
   , fetchurl
  -, fetchpatch
   , meson
   , ninja
   , pkg-config
  
positive.code: , libxml2
  , libgda6
  , libhandy
  , libsoup
  , json-glib
  , gspell
  , glib
  , libdazzle
  , gtk3
  , gtksourceview4
  , gnome
  
negative.code:     libxml2
      glib
      gtk3
      gtksourceview4
      libgda6
      libhandy
      libsoup_3
      json-glib
      gettext
      gspell
  