in node/stylus: get stylus to compile to different dirctory

original .styl files in .../node/ directory

wish to compile .css to .../nginx/ directory

app.use( stylus.middleware({
  src: __dirname + '/node/www',
  dest: __dirname + '/node/www',
  //=src: req.basepath,
  //=dest: req.basepath,
  compile: function(str, path) {
      return stylus(str)
      .set('filename', path)
      .set('compress', true)
      .use(nib());
  }
}) );

if I change dest: __dirname + '/node/www', to dest: __dirname + '/nginx/www' it bombs

don't quite understand how this is supposed to work

solved: was compiling ok. in express, stylus compiles in one step and then is served as a static file in a second step. this is different than jade, which is compiled and served in the same step - therein lay my confusion.

so using stylus in express, need to set the correct directory in the static step if stylus is compiling to a different directory.