os/shared/core/gui.nix

# Almost everything in this file is required to get screen sharing on sway
# to work properly. The rest is required to get sway to work at all.

{ pkgs, config, lib, ... }: 

let cfg = config.custom.gui;
in {

  options.custom.gui = {
    enable = lib.mkEnableOption "Nix-managed GUI services";
  };

  config = lib.mkIf (cfg.enable) {
    hardware.opengl.enable = true;

    security.rtkit.enable = true;

    security.pam.services.swaylock = {};

    services.xserver = {
      enable = true;
      displayManager.gdm.enable = true;
    };

    services.pipewire = {
      enable = true;
      pulse.enable = true;
      wireplumber.enable = true;
    };

    services.dbus.enable = true;

    programs.sway = {
      enable = true;
      extraPackages = [
        pkgs.vulkan-validation-layers
        pkgs.swaylock-effects
      ];
    };

    xdg.portal = {
      enable = true;
      wlr.enable = true;
      extraPortals = [
        pkgs.xdg-desktop-portal-kde
      ];
    };

    environment.systemPackages = with pkgs; [
      brightnessctl
      mesa
      polkit_gnome
      vulkan-tools
      xdg-desktop-portal-wlr
    ];
  };

}