When I have some time, I will attempt to build an installer ISO. Not quite eight years ago, I built several live CDs. Maybe what I learned from those experiences will be helpful.

This website is likely to be very useful: https://snapshot.debian.org/

It appears that some very recent packages can be found here:
https://snapshot.debian.org/archive/debian-security/20250101T021323Z/pool/updates/main/l/linux-6.1/

You may be in luck. I stumbled upon this yesterday and saved the info because it looks like it could be very useful:

The Free Software Media System | Jellyfin
https://jellyfin.org/

@stargate-sg1-cheyenne-mtn

Thanks for the tip.

Live streaming seems problematic to me if the sessions are announced in advance publicly since this lets potential adversaries know when to carry out their attacks (or attempted attacks). If possible, coordination should be carried out using encrypted chat (including encrypted voice calls), rather than using insecure communication methods like email, public websites, regular telephone calls, and SMS text messages.

Some resources that may be useful:

PRISM Break
https://prism-break.org/en/

Security & Privacy Evaluations
https://madaidans-insecurities.github.io/

Rob Braxman Tech
https://rumble.com/c/robbraxman

An idea just came to me, so I went ahead and tried it:

$ aptitude why libc++1-16
i   atril                Depends libatrilview3 (= 1.24.0-1+deb11u1)
i A libatrilview3        Depends libwebkit2gtk-4.0-37 (>= 2.5.3)   
p A libwebkit2gtk-4.0-37 Depends libc++1-16 (>= 1:16.0.6)          

$ aptitude why libc++abi1-16
i   atril                Depends libatrilview3 (= 1.24.0-1+deb11u1)
i A libatrilview3        Depends libwebkit2gtk-4.0-37 (>= 2.5.3)   
p A libwebkit2gtk-4.0-37 Depends libc++abi1-16 (>= 1:16.0.6)       

$ aptitude why libunwind-16
i   atril                Depends libatrilview3 (= 1.24.0-1+deb11u1)
i A libatrilview3        Depends libwebkit2gtk-4.0-37 (>= 2.5.3)   
p A libwebkit2gtk-4.0-37 Depends libunwind-16 (>= 1:16.0.6)

So, apparently the new packages are dependencies of libwebkit2gtk-4.0-37. That's a new one for me. I did not know that packages could suddenly acquire new dependencies. Perhaps this is just one of the oddities that can show up when one is running oldstable.

If you are indeed using Excalibur, then this may be a good example of why many people choose to run unstable (Ceres) instead of testing. Either that, or they run a mixed testing/unstable system -- testing with some packages pulled (as needed) from unstable. The latter approach is the one I would probably use if I were inclined to run a "rolling" system, but didn't want to switch to a totally different distro (e.g., Arch Linux).

Try this and reply with the result:

nslookup deb.devuan.org

Maybe, but I don't think so. I've never seen any error messages when running rsnapshot. I don't run it using cron, I use a script that I wrote so, unless I am mistaken, I believe that I would have seen any error messages if there had been any.

You did give me an idea, though. I am going to create a test file and then delete it after a week or two. That should allow me to determine whether rsnapshot is working correctly.

If it turns out that you absolutely must use NTFS, then I recommend using a Liquorix kernel. According to my research, ntfs-3g is enabled in Liquorix kernels.

See: https://liquorix.net/

Use GParted and format the drive as exFAT. Before doing this, make sure that exfatprogs is installed.