anchor.diff:  , python3
   , libxslt
   , gtk3
  -, webkitgtk
  +, webkitgtk_4_1
   , json-glib
  -, librest
  +, librest_1_0
  +, libxml2
   , libsecret
   , gtk-doc
   , gobject-introspection
   , gettext
   , icu
   , glib-networking
  -, libsoup
  +, libsoup_3
   , docbook-xsl-nons
   , docbook_xml_dtd_412
   , gnome
  
positive.code: { lib, stdenv
  , fetchFromGitLab
  , pkg-config
  , vala
  , glib
  
negative.code:     icu
      json-glib
      libkrb5
      librest_1_0
      libxml2
      libsecret
      libsoup_3
      webkitgtk_4_1
    ];
  
    NIX_CFLAGS_COMPILE = "-I${glib.dev}/include/gio-unix-2.0";
  