anchor.diff: -{ stdenv, fetchurl, gnutls, gtk2, gtk3, libgcrypt, pkgconfig, gettext, which, qt5
  +{ stdenv, fetchurl, gnutls, openssl, libgcrypt, libgpgerror, pkgconfig, gettext
  +, which
  +
  +# GUI support
  +, gtk2, gtk3, qt5
   
   , pluginSearchPaths ? [
       "/run/current-system/sw/lib/gwenhywfar/plugins"
  
positive.code:     urls = mkURLs [ "http://www.aquamaniac.de" "http://www2.aquamaniac.de" ];
      inherit sha256;
    };
  
    preConfigure = ''
      configureFlagsArray+=("--with-guis=gtk2 gtk3 qt5")
  
negative.code: 
    nativeBuildInputs = [ pkgconfig gettext which ];
  
    buildInputs = [ gtk2 gtk3 qt5.qtbase gnutls openssl libgcrypt libgpgerror ];
  
    meta = with stdenv.lib; {
      description = "OS abstraction functions used by aqbanking and related tools";
  