add selinunte (desktop gaming system)

Signed-off-by: ahuston-0 <aliceghuston@gmail.com>

systems/selinunte/desktop.nix

@@ -0,0 +1,44 @@
+{ pkgs, ... }:
+
+{
+  # installs hyprland, and its dependencies
+
+  programs = {
+    hyprland = {
+      enable = true;
+      xwayland.enable = true;
+      withUWSM = true;
+    };
+    hyprlock.enable = true;
+    ydotool.enable = true;
+  };
+  # Optional, hint electron apps to use wayland:
+  environment.sessionVariables.NIXOS_OZONE_WL = "1";
+
+  services = {
+    xserver = {
+      enable = true;
+      displayManager.gdm = {
+        enable = true;
+        wayland = true;
+      };
+    };
+
+    dbus = {
+      enable = true;
+      implementation = "broker";
+    };
+  };
+
+  powerManagement = {
+    enable = true;
+    resumeCommands = ''
+      ${pkgs.hyprlock}/bin/hyprlock -c /home/alice/.config/hypr/hyprlock.conf
+    '';
+  };
+
+  environment.systemPackages = with pkgs; [
+    libsForQt5.qt5.qtwayland
+    qt6.qtwayland
+  ];
+}