Tested on RHEL 9 and CentOS Stream 9.

1. Install System Dependencies

sudo dnf install -y \
    libxml2-devel libxslt-devel zlib-devel \
    lz4 ripgrep curl

2. Run the Installer

Download the latest release from GitHub, extract it, then:

cd PhiloLogic5-*/
./install.sh

3. Configure PhiloLogic

Edit /etc/philologic/philologic5.cfg:

database_root = "/var/www/html/philologic5/"
url_root = "http://localhost/philologic5/"

Create the database directory:

sudo mkdir -p /var/www/html/philologic5
sudo chown -R $USER:$USER /var/www/html/philologic5

4. Start Gunicorn

sudo systemctl enable philologic5-gunicorn
sudo systemctl start philologic5-gunicorn

5. Configure Apache as Reverse Proxy

sudo dnf install -y httpd mod_proxy_html

Add to /etc/httpd/conf.d/philologic5.conf:

ProxyTimeout 300
<Location "/philologic5">
    ProxyPass unix:/var/run/philologic/gunicorn.sock|http://localhost/philologic5 flushpackets=on
    ProxyPassReverse unix:/var/run/philologic/gunicorn.sock|http://localhost/philologic5
    SetEnv no-gzip 1
    SetEnv force-no-buffering 1
</Location>

Restart Apache:

sudo systemctl restart httpd

Make sure the correct permissions are set on the database directory — the user building databases needs write access.