On 2017-09-26 15:40:39 -0400, Tom Lane wrote:
> I'm not really feeling the need to insert a version check though.
It's only a mild preference here.
> Also, what would you check exactly? Inquiring into what
> "postgres --version" returns is not very conclusive about what is
> actually running in the data directory pg_ctl has been pointed at.
Reading PG_VERSION ought to do the trick.
Greetings,
Andres Freund