{stdenv, fetchurl, unzip}: assert unzip != null; stdenv.mkDerivation { name = "docbook-xml-4.2"; builder = ./builder.sh; src = fetchurl { url = http://www.oasis-open.org/docbook/xml/4.2/docbook-xml-4.2.zip; md5 = "73fe50dfe74ca631c1602f558ed8961f"; }; unzip = unzip; }