I use NixOS on my desktop, laptop, and on all new server deployments. It's definitely a learning curve, especially considering the documentation is nowhere near

I use NixOS on my desktop, laptop, and on all new server deployments. It's definitely a learning curve, especially considering the documentation is nowhere near as good as it should be yet, but absolutely worth it in the long run; and I rarely run into unavailability of software. Security updates are indeed sometimes slow to arrive, for the reasons that aidenn0 already described. However! One thing that's particularly interesting about the security update process for NixOS, is that it's an open collaborative effort: https://github.com/NixOS/nixpkgs/issues/23334 https://github.com/NixOS/nixpkgs/issues/23334 More eyeballs are definitely needed for handling security issues, especially since LWN stopped doing their reports, but the process itself is definitely one that has significant potential.