nixos-template-base/configuration/nix-options.nix

{ config, lib, pkgs, ... }:

let
  inherit (lib) mkIf mkMerge mkThenElse;
  annuaire = config.r6d.machines;
  currentMachine = annuaire."${config.networking.fqdn}";
  flags = currentMachine.configurationFlags;
in

{

  # Automatic update & automatic clean

  system.autoUpgrade.enable = flags.auto-upgrade;
  nix = {
    autoOptimiseStore = true;
    gc = {
      automatic = true;
      dates = "daily";
      options = "--delete-older-than 7d";
    };
  };
}