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From: Zsolt Parragi <zsolt.parragi@percona.com>
Date: Thu, 18 Dec 2025 18:28:11 +0000
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Subject: Re: Custom oauth validator options
To: Jacob Champion <jacob.champion@enterprisedb.com>
Cc: VASUKI M <vasukianand0119@gmail.com>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
 david.g.johnston@gmail.com,
	Robert Haas <robertmhaas@gmail.com>, myon@debian.org
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> Might be more reason to look into the GUC system?

I am already thinking about that, I have some ideas for a proof of
concept, but no working prototype yet. But without requiring
shared_preload_libraries, we can't do early error reporting during
postmaster startup about custom parameters. Is that okay? GUCs already
work this way, and this could be a bit safer (reporting unknown
parameters/refusing to proceed during login, when we can completely
parse all parameters), but it would be different compared to how
pg_hba is handled currently.