Re: PSA: Planning to grease protocol connections during 19beta

On Tue, Dec 9, 2025 at 5:16 PM Jacob Champion
<jacob(dot)champion(at)enterprisedb(dot)com> wrote:
> The plan is to grease the minor version number and at least one
> protocol extension during the 19 beta, then revert partway through (as
> tracked by a mid-beta Open Item).

And now it's time to revert. Proposed patch attached.

Though we didn't get any [grease] emails to the list, I think this was
a success. There are recent issues and PRs on GitHub that reference
this, and we flushed out an issue with Debian's upgrade wrappers that
matches the bug that pg_upgrade itself had, and there's even anecdotal
evidence that a correct negotiation implementation can survive contact
with Copilot's incorrect review advice. Woohoo!

Jelte, thanks again for the idea. I think we should try to develop a
production implementation of this for PG20.

--Jacob