configuration.nix/system/gui/default.nix

{
  config,
  lib,
  pkgs,
  ...
}:
let
  cfg = config.jconfig.gui;
  enable = config.jconfig.enable && cfg.enable;
  linuxOlderThan6_3 = lib.versionOlder config.boot.kernelPackages.kernel.version "6.3";
in
{
  config = lib.mkMerge [
    (lib.mkIf enable {
      environment.systemPackages = [
        pkgs.gnome.adwaita-icon-theme
        pkgs.adwaita-qt
        pkgs.nordzy-cursor-theme
        pkgs.pinentry-qt
      ] ++ lib.optional cfg.ydotool.enable pkgs.ydotool;
      systemd = {
        user.services.ydotool = lib.mkIf cfg.ydotool.enable {
          enable = cfg.ydotool.autoStart;
          wantedBy = [ "default.target" ];
          description = "Generic command-line automation tool";
          documentation = [
            "man:ydotool(1)"
            "man:ydotoold(8)"
          ];
          serviceConfig = {
            Type = "simple";
            Restart = "always";
            ExecStart = "${pkgs.ydotool}/bin/ydotoold";
            ExecReload = "${pkgs.util-linux}/bin/kill -HUP $MAINPID";
            KillMode = "process";
            TimeoutSec = 180;
          };
        };
        # Fix xdg-portals issue issue: https://github.com/NixOS/nixpkgs/issues/189851
        user.extraConfig = ''
          DefaultEnvironment="PATH=/run/wrappers/bin:/etc/profiles/per-user/%u/bin:/nix/var/nix/profiles/default/bin:/run/current-system/sw/bin"
        '';
      };

      fonts.fontDir.enable = true;
      programs = {
        dconf.enable = true;
        sway = {
          enable = cfg.sway;
          # No extra packages (by default it adds foot, dmenu, and other stuff)
          extraPackages = [ ];
          wrapperFeatures = {
            base = true;
            gtk = true;
          };
        };
      };
      security = {
        polkit.enable = true;
        rtkit.enable = true; # Recommended for pipewire
      };
      services = {
        flatpak.enable = true;
        # Audio
        pipewire = {
          enable = true;
          alsa = {
            enable = true;
            support32Bit = true;
          };
          pulse.enable = true;
          wireplumber.enable = true;
        };
        # Dbus
        dbus.enable = true;
      };
      xdg.portal = {
        # XDG portals
        enable = true;
        wlr.enable = true;
        extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
        config.preferred = {
          # Default to the gtk portal
          default = "gtk";
          # Use wlr for screenshots and screen recording
          "org.freedesktop.impl.portal.Screenshot" = "wlr";
        };
        # Consider using darkman like upstream
      };
      hardware = {
        opengl.enable = true;
        uinput.enable = true;
        steam-hardware.enable = cfg.steamHardwareSupport;
      };
    })
    (lib.mkIf (enable && linuxOlderThan6_3 && cfg."8bitdoFix") {
      # Udev rules to start or stop systemd service when controller is connected or disconnected
      services.udev.extraRules = ''
        # May vary depending on your controller model, find product id using 'lsusb'
        SUBSYSTEM=="usb", ATTR{idVendor}=="2dc8", ATTR{idProduct}=="3106", ATTR{manufacturer}=="8BitDo", RUN+="${pkgs.systemd}/bin/systemctl start 8bitdo-ultimate-xinput@2dc8:3106"
        # This device (2dc8:3016) is "connected" when the above device disconnects
        SUBSYSTEM=="usb", ATTR{idVendor}=="2dc8", ATTR{idProduct}=="3016", ATTR{manufacturer}=="8BitDo", RUN+="${pkgs.systemd}/bin/systemctl stop 8bitdo-ultimate-xinput@2dc8:3106"
      '';

      # Systemd service which starts xboxdrv in xbox360 mode
      systemd.services."8bitdo-ultimate-xinput@" = {
        unitConfig.Description = "8BitDo Ultimate Controller XInput mode xboxdrv daemon";
        serviceConfig = {
          Type = "simple";
          ExecStart = "${pkgs.xboxdrv}/bin/xboxdrv --mimic-xpad --silent --type xbox360 --device-by-id %I --force-feedback";
        };
      };
    })
  ];
}