You know what, when I started the list I had delta but when I searched for it I got a different tool that didn't look right so I removed it, added this one back. Thanks for the added config!

I did an in-place upgrade of a three-node cluster from 7.4 to 8. Followed the upgrade docs and it worked without a hitch.

I haven't but would be curious to follow your journey. I'm running a NixOS VM (in Proxmox too) but still learning the basics. My goal initially was a simple utility VM. Separately I've also been moving my Docker host VMs to increasingly better setups and NixOS seems like an interesting next candidate.