nixos-configs/modules/desktop/display-manager/hyprland.nix

{
  config,
  lib,
  pkgs,
  ...
}: let
  inherit (lib) filterAttrs hasPrefix optionals;

  inherit (import ./setupMonitors.nix {inherit config pkgs;}) setupMonitors;

  cfg = config.roles.desktop;

  # Nix stuff
  cfgHypr =
    config
    .home-manager
    .users
    .${cfg.user}
    .wayland
    .windowManager
    .hyprland;

  devices = filterAttrs (n: v: hasPrefix "device:" n) cfgHypr.settings;
in {
  home-manager.users.greeter = {
    imports = [../desktop-environment/home/style.nix];

    wayland.windowManager.hyprland = {
      enable = true;
      package = cfgHypr.finalPackage;
      systemd.enable = false;

      settings =
        {
          inherit (cfgHypr.settings) cursor input misc monitor;

          envd = optionals (config.nvidia.enable) [
            "LIBVA_DRIVER_NAME, nvidia"
            "NVD_BACKEND, direct"
            "XDG_SESSION_TYPE, wayland"
            "GBM_BACKEND, nvidia-drm"
            "__GLX_VENDOR_LIBRARY_NAME, nvidia"
          ];

          general.border_size = 0;

          decoration = {
            blur.enabled = false;
            drop_shadow = false;
          };

          exec-once = [
            setupMonitors
            "ags -b greeter &> /tmp/ags-greetd.log; hyprctl dispatch exit"
          ];
        }
        // devices;
    };
  };
}