anchor.diff:  
     LC_ALL = "en_US.utf8";
   
  -  NIX_CFLAGS_COMPILE = [ ]
  -    ++ optionals pythonPluginSupport [ "-I${python}/include/${python.libPrefix}" ];
  -
  -  LDFLAGS = [ ]
  -    ++ optionals pythonPluginSupport [ "-L${python}/lib" "-l${python.libPrefix}" ];
  -
     meta = {
       description = "A console based XMPP client";
       longDescription = ''
  
positive.code: 
    enableParallelBuilding = true;
  
    nativeBuildInputs = [ autoreconfHook glibcLocales pkgconfig ];
  
    buildInputs = [
      expect readline libuuid glib openssl expat ncurses libotr
  
negative.code: { stdenv, fetchFromGitHub, autoreconfHook, pkgconfig, glib, openssl
  , glibcLocales, expect, ncurses, libotr, curl, readline, libuuid
  , cmocka, libmicrohttpd, stabber, expat, libmesode
  , autoconf-archive
  
  , autoAwaySupport ? true,       libXScrnSaver ? null, libX11 ? null
  , notifySupport ? true,         libnotify ? null, gdk_pixbuf ? null
  