Non-obvious Nix Options

On this page NixOS and Home Manager have plenty of options you can set. This is the result of a diligent community accumulating work over many years. You will not need most of it, but when you do want to configure any particular thing, it's nice to have the choice. I was looking at my config and noticed I have options that are used broadly across my machines. Over the years I've encountered some of these options that I wish I had known about sooner. Essentially, if I followed the installation guide, what else might I want to do? Also, NixOS has sane defaults for plenty of options and those evolve over time. I used to set boot.initrd.systemd.enable since it was required to use another option, but as of 26.05 it now defaults to true. So my focus here is on the options I didn't realize I needed to change. Including some batteries I often look at Fedora's release notes and the changes page on their Wiki to check the discussion around what they decide to accept. I find Fedora strikes a…

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