Elaborate comments

vstinner · vstinner · commit 9d8ff71a4946 · 2023-05-25T20:47:11.000+02:00
Also document the build requirements in Doc/using/configure.rst
diff --git a/Doc/conf.py b/Doc/conf.py
@@ -65,7 +65,8 @@
 # By default, highlight as Python 3.
 highlight_language = 'python3'
 
-# Minimum version of sphinx required
+# Minimum version of sphinx required.
+# Sphinx 6.2 no longer uses imghdr which was removed in Python 3.13.
 needs_sphinx = '6.2'
 
 # Ignore any .rst files in the includes/ directory;
diff --git a/Doc/using/configure.rst b/Doc/using/configure.rst
@@ -22,6 +22,8 @@ Features required to build CPython:
 
 * On Windows, Microsoft Visual Studio 2017 or later is required.
 
+* Sphinx 6.2 or newer is required to build the Python documentation.
+
 .. versionchanged:: 3.11
    C11 compiler, IEEE 754 and NaN support are now required.
    On Windows, Visual Studio 2017 or later is required.
diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst
@@ -242,6 +242,8 @@ Build Changes
 =============
 
 * Sphinx 6.2 or newer is now required to build the Python documentation.
+  Sphinx 6.2 no longer uses the :mod:`!imghdr` module which was removed in
+  Python 3.13.
   (Contributed by Victor Stinner in :gh:`104818`.)
 
 
