{ 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 = {
    extraOptions = ''
      experimental-features = nix-command flakes
    '';
    settings = {
      auto-optimise-store = true;
      # Nombre de process d'installation en parrallèle effectués par Nix
      cores = 0;
    };
    gc = {
      automatic = true;
      dates = "daily";
      options = "--delete-older-than 7d";
    };
  };
}