diff -ur patsy-0.5.1/doc/conf.py patsy-0.5.1-doc/doc/conf.py
--- patsy-0.5.1/doc/conf.py	2018-05-30 08:53:45.000000000 +0200
+++ patsy-0.5.1-doc/doc/conf.py	2018-11-12 15:35:24.268655794 +0100
@@ -231,10 +231,10 @@
 
 autoclass_content = "both"
 
-intersphinx_mapping = {"python": ("http://docs.python.org", None),
-                       "numpy": ("http://docs.scipy.org/doc/numpy",
+intersphinx_mapping = {"python": ("/usr/share/doc/python3-docs/html", None),
+                       "numpy": ("/usr/share/doc/python3-numpy-doc",
                                  None),
-                       "pandas": ('http://pandas.pydata.org/pandas-docs/stable/',
+                       "pandas": ('http://pandas.pydata.org/pandas-docs/_stable/',
                                   None),
                        }