nginx-1.8.7.conf

user   gaffneyc gaffneyc;
daemon off;

events {
  worker_connections 1024;
}

http {
  passenger_root /Users/gaffneyc/.rvm/gems/ruby-1.8.7-p330/gems/passenger-3.0.2;
  passenger_ruby /Users/gaffneyc/.rvm/wrappers/ruby-1.8.7-p330/ruby;

  rails_env development;

  error_log /var/log/passenger-1-8-err.log error;

  include       mime.types;
  default_type  application/octet-stream;

  gzip               on;
  sendfile           on;
  keepalive_timeout  0;

  server {
    listen       127.0.0.1:80;
    server_name  puppies.local;
    root         /Users/gaffneyc/dev/puppies/public;

    passenger_enabled on;
  }

  server {
    listen       127.0.0.1:80;
    server_name  timetracking.local;

    location / {
      proxy_pass http://unix:/tmp/timetracking.sock;
    }
  }
}

org.passenger.1.8.7.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">

<plist version="1.0">
  <dict>
    <key>Label</key>             <string>org.passenger.1.8.7</string>
    <key>Program</key>           <string>/opt/nginx-1.8.7/sbin/nginx</string>
    <key>KeepAlive</key>         <false/>

    <key>RunAtLoad</key>         <true/>
    <key>NetworkState</key>      <true/>
    <key>StandardErrorPath</key> <string>/var/log/system.log</string>
  </dict>
</plist>