Improve discussion "Is setup.py deprecated?"

Add alternative solutions for more commands.

GitHub: relates to #1415

source/discussions/setup-py-deprecated.rst

@@ -16,7 +16,7 @@ And of course *setuptools* itself is not deprecated either.
 
 It is however deprecated to run ``python setup.py`` as a command line tool.
 
-This means for example that the following commands **MUST NOT** be run anymore:
+This means that commands such as the following **MUST NOT** be run anymore:
 
 * ``python setup.py install``
 * ``python setup.py develop``
@@ -28,7 +28,7 @@ What commands should be used instead?
 =====================================
 
 +---------------------------------+----------------------------------------+
-| Deprecated                      | Current recommendation                 |
+| Deprecated                      | Recommendation                         |
 +=================================+========================================+
 | ``python setup.py install``     | ``python -m pip install .``            |
 +---------------------------------+----------------------------------------+
@@ -79,6 +79,34 @@ The command ``python setup.py install`` was deprecated
 in setuptools version *58.3.0*.
 
 
+What about other commands?
+==========================
+
+.. rubric:: ``python setup.py test``
+
+The recommendation is to use a test runner such as pytest_.
+
+.. _pytest: https://docs.pytest.org/
+
+
+.. rubric:: ``python setup.py check``, ``python setup.py register``, and ``python setup.py upload``
+
+A trusted replacement is :ref:`twine`:
+
+* ``python -m twine check``
+* ``python -m twine register``
+* ``python -m twine upload``
+
+
+.. rubric:: ``python setup.py --version``
+
+A possible replacement solution (among others) is to rely on setuptools-scm_:
+
+* ``python -m setuptools-scm``
+
+.. _setuptools-scm: https://setuptools-scm.readthedocs.io/en/latest/usage/#as-cli-tool
+
+
 What about custom commands?
 ===========================