{ perlSupport, pythonSupport, javaSupport , stdenv, fetchurl, perl ? null, python ? null, j2sdk ? null}: assert perlSupport -> perl != null; assert pythonSupport -> python != null; assert javaSupport -> j2sdk != null; stdenv.mkDerivation { name = "swig-1.3.19"; builder = ./builder.sh; src = fetchurl { url = http://nix.cs.uu.nl/dist/tarballs/swig-1.3.19.tar.gz; md5 = "a733455544426b31868dd87fc162e750"; }; inherit perlSupport pythonSupport javaSupport; perl = if perlSupport then perl else null; python = if pythonSupport then python else null; j2sdk = if javaSupport then j2sdk else null; }