Link to stdlib distutils deprecation page

Author: ncoghlan

source/guides/distributing-packages-using-setuptools.rst

@@ -4,9 +4,11 @@
 Packaging and distributing projects
 ===================================
 
-This section covers the basics of how to configure, package and distribute your
-own Python projects.  It assumes that you are already familiar with the contents
-of the :doc:`/tutorials/installing-packages` page.
+This section covers some additional details on configuring, packaging and
+distributing Python projects with ``setuptools`` that aren't covered by the
+introductory tutorial in :doc:`/tutorials/packaging-projects`.  It still assumes
+that you are already familiar with the contents of the
+:doc:`/tutorials/installing-packages` page.
 
 The section does *not* aim to cover best practices for Python project
 development as a whole.  For example, it does not provide guidance or tool

source/tutorials/packaging-projects.rst

@@ -333,11 +333,13 @@ be required, but can be omitted with newer versions of setuptools and pip.
 
    You may see some existing projects or other Python packaging tutorials that
    import their ``setup`` function from ``distutils.core`` rather than
-   ``setuptools``. This is a legacy approach that installers [1]_ still support
+   ``setuptools``. This is a `legacy approach`_ that installers [1]_ support
    for backwards compatibility purposes, but using the legacy ``distutils`` API
    directly in new projects is strongly discouraged, as it means that newer
    build commands, like ``setup.py bdist_wheel``, won't work.
 
+.. _legacy approach: https://docs.python.org/3/library/distutils.html
+
 Creating README.md
 ------------------