Use setuptools' find_packages()

setup.cfg

@@ -8,6 +8,7 b' project_urls ='
     Tracker = https://github.com/ipython/ipython/issues
 
 [options]
+packages = find:
 python_requires = >=3.8
 zip_safe = False
 install_requires =
@@ -25,12 +26,16 b' install_requires ='
     appnope; sys_platform == "darwin"
     colorama; sys_platform == "win32"
 
+[options.packages.find]
+exclude =
+    deathrow
+    quarantine
+    setupext
+
 [options.entry_points]
 console_scripts =
     ipython = IPython:start_ipython
-    iptest = IPython.testing.iptestcontroller:main
     ipython3 = IPython:start_ipython
-    iptest3 = IPython.testing.iptestcontroller:main
 pygments.lexers =
     ipythonconsole = IPython.lib.lexers:IPythonConsoleLexer
     ipython = IPython.lib.lexers:IPythonLexer

setup.py

@@ -67,7 +67,6 b' from setupbase import target_update'
 
 from setupbase import (
     setup_args,
-    find_packages,
     find_package_data,
     check_package_data_first,
     find_data_files,
@@ -117,12 +116,10 b" if len(sys.argv) >= 2 and sys.argv[1] in ('sdist','bdist_rpm'):"
 # Find all the packages, package data, and data_files
 #---------------------------------------------------------------------------
 
-packages = find_packages()
 package_data = find_package_data()
 
 data_files = find_data_files()
 
-setup_args['packages'] = packages
 setup_args['package_data'] = package_data
 setup_args['data_files'] = data_files