ENH use dbus lib for signals

lib/XMonad/Internal/DBus/Removable.hs

@@ -73,24 +73,23 @@ removedHasDrive [_, a] =
     (fromVariant a :: Maybe [String])
 removedHasDrive _ = False
 
-playSoundMaybe :: FilePath -> Bool -> IO ()
+playSoundMaybe :: MonadUnliftIO m => FilePath -> Bool -> m ()
 playSoundMaybe p b = when b $ io $ playSound p
 
 -- NOTE: the udisks2 service should be already running for this module to work.
 -- If it not already, we won't see any signals from the dbus until it is
 -- started (it will work after it is started however). It seems safe to simply
 -- enable the udisks2 service at boot; however this is not default behavior.
-listenDevices :: SysClient -> IO ()
+listenDevices :: MonadUnliftIO m => SysClient -> m ()
 listenDevices cl = do
   addMatch' memAdded driveInsertedSound addedHasDrive
   addMatch' memRemoved driveRemovedSound removedHasDrive
   where
-    addMatch' m p f =
-      void $
-        addMatch (toClient cl) ruleUdisks {matchMember = Just m} $
-          playSoundMaybe p . f . signalBody
+    addMatch' m p f = do
+      let rule = ruleUdisks {matchMember = Just m}
+      void $ addMatchCallback rule (playSoundMaybe p . f) cl
 
-runRemovableMon :: Maybe SysClient -> SometimesIO
+runRemovableMon :: MonadUnliftIO m => Maybe SysClient -> Sometimes (m ())
 runRemovableMon cl =
   sometimesDBus cl "removeable device monitor" "dbus monitor" deps $ io . listenDevices
   where