{ pkgs, ... }:

let
  increments = "5";

  brightness-change = pkgs.writeShellScriptBin "brightness-change" ''
    sleep 0.05

    [[ $1 == "up" ]] && ${pkgs.brightnessctl}/bin/brightnessctl set ${increments}%+
    [[ $1 == "down" ]] && ${pkgs.brightnessctl}/bin/brightnessctl set ${increments}%-
  '';

  brightness-up = pkgs.writeShellScriptBin "brightness-up" ''
    brightness-change up ${increments}
  '';

  brightness-down = pkgs.writeShellScriptBin "brightness-down" ''
    brightness-change down ${increments}
  '';

in { home.packages = [ brightness-change brightness-up brightness-down ]; }