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I use the community impermanence flake instead of ZFS or btrfs. It’s still fairly nice; I actually like knowing that stuff like ~/.cache
doesn’t persist anywhere on disk, even in snapshots. It does require a lot of careful thought, like e.g. which parts of the persistent disk need to be backed up locally.
Because frankly, Ronald (the current maintainer, not the original author) is very competent. I say this as somebody who has personally been yelled at by Ronald at a kernel summit; I didn’t deserve it, but none of his technical points were wrong. I like to think of myself as the kind of person that, given enough time and documentation, can maintain anything; I think it’d still take three of me to do Ronald’s job. (Well, “job.” I think he technically works for Red Hat or something?) Not to excuse his conduct, just to explain why he’s not been replaced yet.