{ spellChecking ? true
, stdenv, fetchurl, pkgconfig, gtk, gtkspell ? null, gnet
, libxml2, perl, pcre
}:

assert pkgconfig != null && gtk != null && gnet != null
  && libxml2 != null && perl != null && pcre != null;
assert spellChecking -> gtkspell != null && gtk == gtkspell.gtk;
assert gtk.glib == gnet.glib;

derivation {
  name = "pan-0.14.2.91";
  system = stdenv.system;

  builder = ./builder.sh;
  src = fetchurl {
    url = http://pan.rebelbase.com/download/releases/0.14.2.91/SOURCE/pan-0.14.2.91.tar.bz2;
    md5 = "4770d899a1c1ba968ce96bc5aeb07b62";
  };

  gtkspell = if spellChecking then gtkspell else null;
  inherit spellChecking stdenv pkgconfig gtk gnet libxml2 perl pcre;
}