On Tue, 30 Dec 2025, David Wright wrote:
These references may help:
https://wiki.debian.org/SourcesList ?
https://www.debian.org/mirror/ftpmirror
? Note that there's a new format for sources files, variously called
debian.sources, deb822, or Debian RFC822 format, not supported by
buster, and recommended for trixie on. (It's in the wiki.)
It is supported by buster, and even stretch. You have to go all the way
back to jessie for it not to be supported.
What is new -and I don't know when it was added, is Signed-By. I think
that might work from stretch too but I didn't know of it until trixie so
I've not used it yet.