OpenBSD httpd configuration for cgit with lua support

[Biswakalyan Bhuyan]

Hello there, 

I've been trying to setup cgit on my OpenBSD server and encountered an
issue with running my own compiled version of `cgit.cgi`. Here's some
context:

I followed the official instructions from the cgit README
[https://git.zx2c4.com/cgit/tree/README] and comiled cgit with lua
support using:

`gmake LUA_PKGCONFIG=luajit CFLAGS="-I/usr/local/include/luajit-2.0" install`

However, when I try to run the `cgit.cgi` with the following OpenBSD
`httpd` configuration, it doesn't work as expected:

```
server "git.example.com" {
  listen on * tls port 443
  tls {
    certificate "/etc/ssl/git.example.com.fullchain.pem"
    key "etc/ssl/private/git.example.com.key"
  }

  location "/cgit.*" {
    root "/cgit"
    no fastcgi
  }

  root "/cgi-bin/cgit.cgi"
  fastcgi socket "/run/slowcgi.sock"

  location "/.well-known/acme-challenge/*" {
    root "/acme"
    request strip 2
  }
}
```

The interesting part is that the official package cgit.cgi works
perfectly fine with this configuration, but as soon as i switch to my
compiled version with Lua support, it fails to load.

For comparision i previously had a similar setup running on Nginx
(Debian), and everything worked smoothly with the following
configuration:

```
server { 
  listen 443 ssl; 
  listen [::]:443 ssl; 
  ssl_certificate /etc/ssl/nginx/git.example.org.crt; 
  ssl_certificate_key /etc/ssl/nginx/git.example.org.key; 
  server_name git.example.org;

  root /usr/share/cgit;
  try_files $uri @cgit;

  location ~ /.+/(info/refs|git-upload-pack) {
    include             fastcgi_params;
    fastcgi_param       SCRIPT_FILENAME /usr/lib/git-core/git-http-backend;
    fastcgi_param       PATH_INFO           $uri;
    fastcgi_param       GIT_HTTP_EXPORT_ALL 1;
    fastcgi_param       GIT_PROJECT_ROOT    /var/git;
    fastcgi_param       HOME                /var/git;
    fastcgi_pass        unix:/run/fcgiwrap.socket;
  }

  location @cgit {
    include fastcgi_params;
    fastcgi_param SCRIPT_FILENAME /usr/lib/cgit/cgit.cgi;
    fastcgi_param PATH_INFO $uri;
    fastcgi_param QUERY_STRING $args;
    fastcgi_param HTTP_HOST $server_name;
    fastcgi_pass unix:/run/fcgiwrap.socket;
  }
}
```

PS - I ended up merging the `jd/zx2c4-deployment` branch that uses uwsgi
insted of slowcgi then i recompiled uwsgi from github
[https://github.com/unbit/uwsgi] and setup a config for cgit in
`/var/www/uwgsi/cgit.ini` here's what the config looks like:

```
[uwsgi]
fastcgi-socket = /var/www/run/cgit.socket 
fastcgi-modifier1 = 9 
plugin-dir = /var/www/uwsgi-git/ 
plugins = cgi

cgi = /var/www/uwsgi/cgit/cgi/cgit.cgi 
need-app = false 
CGIT_CONFIG = /etc/cgitrc 
gid = www 
uid = www 
```

then i just ran this:

`./uwsgi --ini /var/www/uwsgi/cgit.ini`

and it worked! so I updated my httpd to use cgit.socket instead of
slowcgi.sock and everything's running fine.

but now i've got an new issue my `cgitrc` file doesn't seem to be
recognising, no matter where i put it. i tried `/var/www/conf/cgitrc`
and `/etc/cgitrc` but still nothing worked. am trying to figure it out
anybody have any idea about it please let me know 

NOTE - I wanna use all the filters in the cgit projects that they have
provided

Biswakalyan