{ stdenv, fetchurl, apr, expat , bdbSupport ? false, db4 ? null }: assert bdbSupport -> db4 != null; stdenv.mkDerivation rec { name = "apr-util-1.3.9"; src = fetchurl { url = "mirror://apache/apr/${name}.tar.bz2"; sha256 = "10zcy1an5xkjx8nflirvm2a8rnp9psckws6r7xr5wq6ffxnafhc7"; }; configureFlags = '' --with-apr=${apr} --with-expat=${expat} ${if bdbSupport then "--with-berkeley-db=${db4}" else ""} ''; passthru = { inherit bdbSupport; }; meta = { homepage = http://apr.apache.org/; description = "A companion library to APR, the Apache Portable Runtime"; }; }