l xmonad: send urgency to dbus

lass/5pkgs/xmonad-lass.nix

@@ -36,7 +36,7 @@ import XMonad.Hooks.FloatNext (floatNextHook)
 import XMonad.Hooks.ManageDocks (avoidStruts, ToggleStruts(ToggleStruts))
 import XMonad.Hooks.Place (placeHook, smart)
 import XMonad.Hooks.UrgencyHook (focusUrgent)
-import XMonad.Hooks.UrgencyHook (SpawnUrgencyHook(..), withUrgencyHook)
+import XMonad.Hooks.UrgencyHook (withUrgencyHook, UrgencyHook(..))
 import XMonad.Layout.FixedColumn (FixedColumn(..))
 import XMonad.Layout.Minimize (minimize, minimizeWindow, MinimizeMsg(RestoreNextMinimizedWin))
 import XMonad.Layout.NoBorders (smartBorders)
@@ -44,9 +44,20 @@ import XMonad.Layout.SimplestFloat (simplestFloat)
 import XMonad.Prompt (autoComplete, font, searchPredicate, XPConfig)
 import XMonad.Prompt.Window (windowPromptGoto, windowPromptBringCopy)
 import XMonad.Util.EZConfig (additionalKeysP)
+import XMonad.Util.NamedWindows (getName)
+import XMonad.Util.Run (safeSpawn)
 
 import XMonad.Stockholm.Shutdown
 
+data LibNotifyUrgencyHook = LibNotifyUrgencyHook deriving (Read, Show)
+
+instance UrgencyHook LibNotifyUrgencyHook where
+    urgencyHook LibNotifyUrgencyHook w = do
+        name     <- getName w
+        Just idx <- fmap (W.findTag w) $ gets windowset
+
+        safeSpawn "${pkgs.libnotify}/bin/notify-send" [show name, "workspace " ++ idx]
+
 myTerm :: FilePath
 myTerm = "${pkgs.rxvt_unicode_with-plugins}/bin/urxvtc"
 
@@ -61,7 +72,7 @@ main = getArgs >>= \case
 main' :: IO ()
 main' = do
     xmonad $ ewmh
-        $ withUrgencyHook (SpawnUrgencyHook "echo emit Urgency ")
+        $ withUrgencyHook LibNotifyUrgencyHook
         $ def
             { terminal           = myTerm
             , modMask            = mod4Mask