inputs:
{
  options.nixos.system.sysctl = let inherit (inputs.lib) mkOption types; in
  {
    laptop-mode = mkOption { type = types.nullOr types.int; default = null; };
  };
  config =
    let
      inherit (inputs.lib) mkIf mkMerge;
      inherit (inputs.config.nixos.system) sysctl;
    in mkMerge
    [
      {
        boot.kernel.sysctl =
        {
          "vm.oom_kill_allocating_task" = true;
          "vm.oom_dump_tasks" = false;
          "vm.overcommit_memory" = 1;
          "kernel.sysrq" = 438;
        };
      }
      (mkIf (sysctl.laptop-mode != null) { boot.kernel.sysctl."vm.laptop_mode" = sysctl.laptop-mode; })
    ];
}