Can't specify config

[parkr]

I run a CentOS 6.3 box with nginx installed into /opt/nginx and there doesn't seem to be a way to specify where my conf file is, like there is to specify where my log file is.

Traceback (most recent call last):
  File "/usr/bin/ngxtop", line 9, in <module>
    load_entry_point('ngxtop==0.0.1', 'console_scripts', 'ngxtop')()
  File "/usr/lib/python2.6/site-packages/ngxtop/ngxtop.py", line 446, in main
    process(args)
  File "/usr/lib/python2.6/site-packages/ngxtop/ngxtop.py", line 409, in process
    access_log, log_format = extract_nginx_conf(config, access_log)
  File "/usr/lib/python2.6/site-packages/ngxtop/ngxtop.py", line 142, in extract_nginx_conf
    with open(path) as conf_file:
IOError: [Errno 2] No such file or directory: '/etc/nginx/nginx.conf'