A work in progress.  

Check it: 
  http://errtheblog.com/post/3908

Use it: 
  $ generate_nginx_config nginx_config.yml /etc/nginx.conf

See an example config file:
  $ generate_nginx_config --example

You can set two environment variables:  
  - NGINX_CONFIG_YAML to specify the YAML config file 
  - NGINX_CONFIG_FILE to specify the nginx config file

By default, generate_nginx_config won't overwrite your OUT file.  To rock this behavior,
pass in --overwrite or -o or -y or --force or -f.  Whichever.

>> Chris Wanstrath
=> chris[at]ozmm[dot]org