valenting oh, now it is, but at the 23th of march it wasn't part of the installer
Unlikely - the code is there since 2024-05-24.
git blame -L529,+3 setup.sh
^aaf95ba (Jan Engelhardt 2024-05-24 11:48:02 +0200 529) writelog "Config stage: gromox config"
^aaf95ba (Jan Engelhardt 2024-05-24 11:48:02 +0200 530) setconf /etc/gromox/gromox.cfg http_remote_host_hdr X-Real-IP
^aaf95ba (Jan Engelhardt 2024-05-24 11:48:02 +0200 531) setconf /etc/gromox/http.cfg listen_port 10080
Must have another reason.