postgresql-setup --initdb with custom data directory

I am trying to setup Postgres 12 on Centos 8. Postgres shall be installed in the default directory i.e. /var/lib/pgsql, however I want the data directory to be in /data/pgsql I want to use postgresql-setup as root, as I believe it will create systemd service files along with it, rather than using pg_ctl or running initdb as postgres user. However, if I try $ postgresql-setup --initdb --pgdata=/data/pgsql/ I will receive the following error. postgresql-setup: unrecognized option '--pgdata=/data/pgsql' FATAL: can't parse arguments What is the best way to achieve this?