{ perlSupport, pythonSupport, javaSupport , stdenv, fetchurl, perl ? null, python ? null, jdk ? null}: assert perlSupport -> perl != null; assert pythonSupport -> python != null; assert javaSupport -> jdk != null; stdenv.mkDerivation { name = "swig-1.3.31"; builder = ./builder.sh; src = fetchurl { url = http://surfnet.dl.sourceforge.net/sourceforge/swig/swig-1.3.31.tar.gz; sha256 = "01fqf6xvhaqh76kh13bknn5j7axpm1pdnjpzwxsa9d1lbq4n7bf2"; }; inherit perlSupport pythonSupport javaSupport; perl = if perlSupport then perl else null; python = if pythonSupport then python else null; jdk = if javaSupport then jdk else null; }