Re: improve CREATE EXTENSION error message

On 11/29/21, 2:04 PM, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> I think "The extension must ..." would read better, otherwise +1.
>
> I don't especially like intertwining the hint choice with the existing
> special case for per-version files. Our usual style for conditional
> hints can be found in places like sysv_shmem.c, and following that
> would lead to a patch roughly like

Alright, here's v3. In this version, I actually removed the message
about the control file entirely, so now the error message looks like
this:

postgres=# CREATE EXTENSION does_not_exist;
ERROR: extension "does_not_exist" is not available
DETAIL: The extension must first be installed on the system where PostgreSQL is running.
HINT: The pg_available_extensions view lists the extensions that are available for installation.

I can add the control file part back if we think it's necessary.

Nathan