Remove dependency from distutils.version (albertosottile#18)

darkdetect/__init__.py

@@ -9,13 +9,25 @@
 import sys
 import platform
 
-if sys.platform == "darwin":
-    from distutils.version import LooseVersion as V
-    if V(platform.mac_ver()[0]) < V("10.14"):
-        from ._dummy import *
+def macos_supported_version():
+    sysver = platform.mac_ver()[0] #typically 10.14.2 or 12.3
+    major = int(sysver.split('.')[0])
+    if major < 10:
+        return False
+    elif major >= 11:
+        return True
     else:
+        minor = int(sysver.split('.')[1])
+        if minor < 14:
+            return False
+        else:
+            return True
+
+if sys.platform == "darwin":
+    if macos_supported_version():
         from ._mac_detect import *
-    del V
+    else:
+        from ._dummy import *
 elif sys.platform == "win32" and platform.release().isdigit() and int(platform.release()) >= 10:
     # Checks if running Windows 10 version 10.0.14393 (Anniversary Update) OR HIGHER. The getwindowsversion method returns a tuple.
     # The third item is the build number that we can use to check if the user has a new enough version of Windows.