nixos-config/modules/ssd.nix

{ config, lib, ... }:
let
  cfg = config.sbruder.ssd;
in
{
  options.sbruder.ssd = {
    enable = lib.mkEnableOption "ssd optimisations";
    fileSystems = lib.mkOption {
      type = lib.types.listOf lib.types.str;
      default = [ "/" ];
      description = "List of file systems to apply optimisations to";
    };
  };

  config = lib.mkIf cfg.enable {
    fileSystems = builtins.listToAttrs
      (builtins.map
        (fs: {
          name = fs;
          value = {
            options = [
              "discard"
              "noatime"
              "nodiratime"
            ];
          };
        })
        cfg.fileSystems);

    services.fstrim.enable = true;
  };
}