diff -uNr Python-3.8.0/Lib/pathlib.py Python-3.8.0.mod/Lib/pathlib.py
--- Python-3.8.0/Lib/pathlib.py	2019-10-14 16:34:47.000000000 +0300
+++ Python-3.8.0.mod/Lib/pathlib.py	2019-11-17 23:35:51.224429521 +0200
@@ -412,7 +412,11 @@
 
     unlink = os.unlink
 
-    link_to = os.link
+    if hasattr(os, "link"):
+        link_to = os.link
+    else:
+        def link_to(self, src, dst):
+            NotImplementedError("link() not available on this system")
 
     rmdir = os.rmdir