nostr:npub10smdhqjvt80rt7g3mgqvwhvxs4qh8few5pyfgs6wcxap7w4vrl3spfhjqm That sounds too simplistic/hopeful. I don't think we have the necessary low level operations to create a *GENERIC* solution that allows atomic/synchronous snapshots at arbitrary scale. Also: rollbacks are intended for fast recovery. If I have to dive into analyzing NixOS expressions, the "fast" is out of the window. Roll forward may allow you to fix it quicker on an application level and pay attention to the outside world that your application already  communicated with.