anchor.diff:  , openssl
   , linkOpenssl? true
   , openldap
  -, withLdap ? false
  +, withLdap ? true
   , sqlite
  -, withSqlite ? false
  +, withSqlite ? true
   , libpcap
   , withPcap ? true
   , libcap
  
positive.code:     ++ optional withJson json_c
      ++ optional withYubikey libyubikey
      ++ optional withCollectd collectd;
  
    # NOTE: are the --with-{lib}-lib-dir and --with-{lib}-include-dir necessary with buildInputs ?
  
    configureFlags = [
       "--sysconfdir=/etc"
  
negative.code:     "localstatedir=\${TMPDIR}"
    ];
  
    meta = with stdenv.lib; {
      homepage = http://freeradius.org/;
      description = "A modular, high performance free RADIUS suite";
  