Merge pull request #11 from WardsParadox/recentsfix

Add show-recents ONLY if macOS >=10.14

Author: homebysix

payload/Library/Python/2.7/site-packages/docklib.py

@@ -5,7 +5,8 @@
 
 import os
 import subprocess
-
+from platform import mac_ver
+from distutils.version import LooseVersion
 # pylint: disable=E0611
 from Foundation import NSURL
 from Foundation import CFPreferencesAppSynchronize
@@ -29,10 +30,13 @@ class Dock:
     _DOCK_LAUNCHAGENT_ID = "com.apple.Dock.agent"
     _DOCK_LAUNCHAGENT_FILE = "/System/Library/LaunchAgents/com.apple.Dock.plist"
     _SECTIONS = ["persistent-apps", "persistent-others"]
-    _MUTABLE_KEYS = ["autohide", "orientation", "show-recents", "tilesize"]
+    _MUTABLE_KEYS = ["autohide", "orientation", "tilesize"]
     _IMMUTABLE_KEYS = ["mod-count"]
     items = {}
 
+    if LooseVersion(mac_ver()[0]) >= LooseVersion("10.14"):
+        _MUTABLE_KEYS.append("show-recents")
+
     def __init__(self):
         for key in self._SECTIONS:
             try: