nixos/options/custom/programs/mangohud.nix

{
  config,
  lib,
  pkgs,
  ...
}:
with lib; let
  cfg = config.custom.programs.mangohud;
in {
  options.custom.programs.mangohud.enable = mkOption {default = false;};

  config.home-manager.users.${config.custom.username} = mkIf cfg.enable {
    # https://github.com/flightlessmango/MangoHud
    programs.mangohud = {
      enable = true;
      enableSessionWide = true;

      settings = {
        background_alpha = 0;
        background_color = "002b36";
        battery = true;
        battery_watt = true;
        core_load = true;
        cpu_color = "268bd2";
        cpu_temp = true;
        device_battery = "gamepad,mouse";
        dynamic_frame_timing = true;
        engine_color = "dc322f";
        font_file = "${(pkgs.nerdfonts.override {fonts = ["Iosevka"];})}/share/fonts/truetype/NerdFonts/IosevkaNerdFontPropo-SemiBold.ttf";
        font_size = 24;
        fps_limit = "100,75,60,50"; # !! Monitor dependent
        fps_limit_method = "early"; # Smoother frametimes compared to late
        frametime = true;
        frametime_color = "859900";
        #// gl_vsync = -1; # Adaptive
        gpu_color = "2aa198";
        gpu_load_change = true;
        gpu_temp = true;
        gpu_stats = true;
        hud_compact = true;
        io_color = "b58900";
        io_read = true;
        io_write = true;
        no_display = true; # Hide by default
        position = "top-center";
        ram = true;
        ram_color = "d33682";
        reload_cfg = "Control_L+Shift_L+slash";
        show_fps_limit = true;
        swap = true;
        text_color = "fdf6e3";
        throttling_status_graph = true;
        toggle_fps_limit = "Control_L+period";
        toggle_hud = "Control_L+slash";
        #// vsync = 0; # Adaptive
        vram = true;
        vram_color = "6c71c4";
      };
    };
  };
}