Catching up with breakage

docs/conf.py

@@ -17,7 +17,9 @@ def setup(app):
     app.add_javascript("https://cdn.jsdelivr.net/npm/clipboard@1/dist/clipboard.min.js")
 
 # Enable MathJax for Math
-extensions = ['sphinx.ext.mathjax', 'sphinx_copybutton.sphinx_copybutton']
+extensions = ['sphinx.ext.mathjax',
+              'sphinx.ext.intersphinx',
+              'sphinx_copybutton.sphinx_copybutton']
 
 # The master toctree document.
 master_doc = 'index'
@@ -26,7 +28,13 @@ master_doc = 'index'
 # directories to ignore when looking for source files.
 # This pattern also affects html_static_path and html_extra_path .
 exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store',
-                    'tutorials/custom.rst']
+                    'install/custom.rst']
+
+intersphinx_mapping = {
+    'sphinx': ('http://www.sphinx-doc.org/en/master/', None),
+}
+
+intersphinx_cache_limit = 90 # days
 
 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = 'sphinx'