randomWallpaper: check if wm is alive

homeManagerModules/services/randomWallpaper/default.nix

@@ -14,19 +14,38 @@
 
     update_interval = 900 # 15 minutes in seconds
 
+    xdg_runtime_dir = ENV['XDG_RUNTIME_DIR']
+    hyprland_instance_signature = ENV['HYPRLAND_INSTANCE_SIGNATURE']
+    sway_sock = ENV['SWAYSOCK']
+
+    hyprland_lock_path = nil
+
+    unless hyprland_instance_signature.nil?
+      hyprland_lock_path = File.join(xdg_runtime_dir, 'hypr', hyprland_instance_signature, 'hyprland.lock')
+    end
+
+    def wm_dead? (hyprland_lock_path, sway_sock)
+      sway_running = system("pidof sway > /dev/null")
+      hypr_running = system("pidof Hyprland > /dev/null")
+      (hyprland_lock_path.nil? || !File.exist?(hyprland_lock_path) || !hypr_running) && (sway_sock.nil? || !File.exist?(sway_sock) || !sway_running)
+    end
+
     def get_outputs
       hyprctl = IO.popen(["${lib.getExe' config.wayland.windowManager.hyprland.package "hyprctl"}", 'monitors']).read
       swaymsg = IO.popen(["${lib.getExe' config.wayland.windowManager.sway.package "swaymsg"}", '-t', 'get_outputs', '-p']).readlines
+
       hypr_outputs = hyprctl.each_line.map { |line| line.split[1] if line.include?('Monitor') }.compact
       sway_outputs = swaymsg.select { |line| line.include?('Output') }.map { |line| line.split[1] }
-      return sway_outputs | hypr_outputs
+
+      return (sway_outputs | hypr_outputs)
     end
 
     sleep 1
 
-    if Dir.exist?(directory)
     loop do
       active_monitors = get_outputs
+
+      break if wm_dead? hyprland_lock_path, sway_sock
       next if active_monitors.empty?
 
       added_monitors = active_monitors - known_monitors.keys
@@ -64,7 +83,6 @@
 
       sleep 3
     end
-    end
   '';
 in {
   config = lib.mkIf config.ar.home.services.randomWallpaper.enable {