cores = 0;

      systemd.services.nix-daemon.serviceConfig = {
        MemoryAccounting = true;
        MemoryMax = "90%";
        OOMScoreAdjust = 500;
      };

      min-free = ${toString (2 * 1024 * 1024 * 1024)} # 2G
      max-free = ${toString (1 * 1024 * 1024 * 1024)} # 1G

      min-free = 2G