Not so share-worthy as I hacked my way>
$this->bbcode_second_pass_code('', 'git clone git://github.com/gero3/cloud9.git
cloud9/bin/cloud9.sh')
"npm install libxml" fails there (
http://registry.npmjs.org/libxml), so I
$this->bbcode_second_pass_code('', 'git clone git://github.com/ajaxorg/node-libxml.git
wget http://registry.npmjs.org/libxml/-/libxml-0.0.4.tgz')
to get rid of x86 specific '-msse2' options in package/support/o3/wscript. I had to pacman -S libxml so things would build, then mv from node-libxml to node_modules/libxml. Now I can:
$this->bbcode_second_pass_code('', '# node cloud9/bin/cloud9.js -l 0.0.0.0')
and it seems to work with Chromium browser. BUT. I have done zero testing so far, except hey look it came up...