system/impermanence/default.nix


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{
  config,
  lib,
  ...
}: let
  networkmanager =
    if config.networking.networkmanager.enable
    then [
      "/etc/NetworkManager" # store the networkmanager configs
    ]
    else [];
  directories =
    [
      "/etc/nixos"
      "/var/log"
      # TODO the following entries need to be checked
      #"/var/lib/bluetooth"
      #"/var/lib/nixos"
      #"/var/lib/systemd/coredump"
    ]
    ++ networkmanager;
in {
  # needed for the hm impermanence config
  programs.fuse.userAllowOther = true;

  environment.persistence = {
    "/srv" = {
      hideMounts = true;
      inherit directories;
      files = [
        "/etc/machine-id"
      ];
    };
  };
}