Debian 13, Postgres, and the US/* time zones

> The worst part about this is that it didn't get so much as a mention in the Debian 13 release notes. I read through that document before going for it and never encountered it. Indeed, even now, you won't find "tzdata" or "zone" in it.

I had another issue during my upgrade to Debian 13 that also wasn't mentioned in the release notes. I filed a bug report, but I was told that the issue was not important enough to put in the release notes, and I should have instead more closely read NEWS.Debian of the package. So I don't really know anymore what the "Issues to be aware of" chapter in the release notes is for, because apparently it's only a small selection of issues you need to be aware of.

What was your issue ?

The version of pdns-recursor in trixie uses a different configuration file syntax then older versions.

(There is a tool to convert the old configuration syntax to the new, but it requires a working installation. There is a command line option to enable support for the old format, which if nothing else helps to be able to run the conversion tool, but there's no information how to enable that command line option in the way Debian starts pdns-recursor.)

Sharing undocumented gotcha: nginx default config (/etc/nginx/nginx.conf) now has `server_tokens off` set with a comment that it's "common practice" (agreed). This is not in upstream's git version of the file[1], I therefore presume it's a Debian maintainer change.

The operational upgrade failure is if you have any existing drop-in config that sets `server_tokens off` already a hard fail Nginx error about duplicated keywords will occur, causing the apt process to exit with failure code(s) during the standard upgrade process.

[1] https://github.com/nginx/nginx/blob/master/conf/nginx.conf

Tip: Debian provides browsable source repositories so it is usually easy to find out whether something is a local Debian change.

* https://packages.debian.org/source/sid/nginx

* https://salsa.debian.org/nginx-team/nginx/-/commit/3e7838a6b...

* https://salsa.debian.org/nginx-team/nginx/-/merge_requests/8...