osx dlopen error

[James Campos]

i'm getting started with node-webkit, and receive the following error:

[8499:0623/160709:INFO:CONSOLE(359)] "Uncaught Error: dlopen(/Users/james/src/me/tmp/pty/node_modules/pty.js/build/Release/pty.node, 1): Symbol not found: _environ

  Referenced from: /Users/james/src/me/tmp/pty/node_modules/pty.js/build/Release/pty.node

  Expected in: dynamic lookup

", source: module.js (359)

index.html:

<script>

var pty = require('pty.js');

var term = pty.fork('sh');

console.log(term.process);

</script>

i am using pty.js[1], a c++ module which i rebuilt with `nw-gyp rebuild --target=0.6.0`. from the wiki[2], i should "ensure libraries your module links to are universal builds" - how do i do that? i am on osx 10.7.5, using node 0.10

[1]: https://github.com/chjj/pty.js

[2]: https://github.com/rogerwang/node-webkit/wiki/Build-native-modules-with-nw-gyp