From 51332c7b08f17a471706aa3a2b5a55d34c28a31d Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Sun, 9 Aug 2020 00:44:04 +0900
Subject: [PATCH 1/3] Fix #8074: napoleon: Crashes during processing C-ext
 module

inspect.getfile() raises TypeError if given object is a C-extension.
This handles the exception not to be crashed.
---
 CHANGES                          | 2 ++
 sphinx/ext/napoleon/docstring.py | 5 ++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 5f645efa8..092673746 100644
--- a/CHANGES
+++ b/CHANGES
@@ -37,6 +37,8 @@ Features added
 Bugs fixed
 ----------
 
+* #8074: napoleon: Crashes during processing C-ext module
+
 Testing
 --------
 
diff --git a/sphinx/ext/napoleon/docstring.py b/sphinx/ext/napoleon/docstring.py
index 52abf9753..29799cb06 100644
--- a/sphinx/ext/napoleon/docstring.py
+++ b/sphinx/ext/napoleon/docstring.py
@@ -1074,7 +1074,10 @@ class NumpyDocstring(GoogleDocstring):
         super().__init__(docstring, config, app, what, name, obj, options)
 
     def _get_location(self) -> str:
-        filepath = inspect.getfile(self._obj) if self._obj is not None else None
+        try:
+            filepath = inspect.getfile(self._obj) if self._obj is not None else None
+        except TypeError:
+            filepath = None
         name = self._name
 
         if filepath is None and name is None:

From a4487f1762e722b1d7639ec13c531a7c2f8ce889 Mon Sep 17 00:00:00 2001
From: Yves Chevallier <yves-chevallier@heig-vd.ch>
Date: Sun, 9 Aug 2020 11:44:41 +0200
Subject: [PATCH 2/3] Check if LaTeX package already added

---
 sphinx/registry.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sphinx/registry.py b/sphinx/registry.py
index 0aec0a9fd..4d1e9eb72 100644
--- a/sphinx/registry.py
+++ b/sphinx/registry.py
@@ -367,7 +367,14 @@ class SphinxComponentRegistry:
         logger.debug('[app] adding js_file: %r, %r', filename, attributes)
         self.js_files.append((filename, attributes))
 
+    def has_latex_package(self, name: str) -> bool:
+        packages = self.latex_packages + self.latex_packages_after_hyperref
+        return bool([x for x in packages if x[0] == name])
+
     def add_latex_package(self, name: str, options: str, after_hyperref: bool = False) -> None:
+        if self.has_latex_package(name):
+            logger.warn("latex package '%s' already included" % name)
+
         logger.debug('[app] adding latex package: %r', name)
         if after_hyperref:
             self.latex_packages_after_hyperref.append((name, options))

From 5f82825e273dfc5df3c4ef499876def8b024fa81 Mon Sep 17 00:00:00 2001
From: Yves Chevallier <yves-chevallier@heig-vd.ch>
Date: Sun, 9 Aug 2020 13:33:42 +0200
Subject: [PATCH 3/3] Customize jinja comment-tag

---
 sphinx/util/template.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sphinx/util/template.py b/sphinx/util/template.py
index 18047d687..bb078a2a2 100644
--- a/sphinx/util/template.py
+++ b/sphinx/util/template.py
@@ -84,6 +84,8 @@ class LaTeXRenderer(SphinxRenderer):
         self.env.variable_end_string = '%>'
         self.env.block_start_string = '<%'
         self.env.block_end_string = '%>'
+        self.env.comment_start_string = '<#'
+        self.env.comment_end_string = '<#'
 
 
 class ReSTRenderer(SphinxRenderer):