https://github.com/fail2ban/fail2ban/commit/7f22c4873aed3b5ffce0953f079f3c1977297c9a
https://github.com/fail2ban/fail2ban/commit/5ac303df8a171f748330d4c645ccbf1c2c7f3497
https://github.com/fail2ban/fail2ban/commit/d6b884f3b72b8a42b21da863836569ef6836c2ea
https://github.com/fail2ban/fail2ban/issues/3098
https://bugs.gentoo.org/818733

From: "Sergey G. Brester" <serg.brester@sebres.de>
Date: Sun, 19 Sep 2021 18:36:02 +0200
Subject: [PATCH] remove 2to3 in setup (should be called outside before setup)

--- a/setup.py
+++ b/setup.py
@@ -39,14 +39,6 @@
 if setuptools is None:
 	from distutils.command.install import install
 	from distutils.command.install_scripts import install_scripts
-try:
-	# python 3.x
-	from distutils.command.build_py import build_py_2to3
-	from distutils.command.build_scripts import build_scripts_2to3
-	_2to3 = True
-except ImportError:
-	# python 2.x
-	_2to3 = False
 
 import os
 from os.path import isfile, join, isdir, realpath

From: sebres <info@sebres.de>
Date: Sun, 19 Sep 2021 18:49:18 +0200
Subject: [PATCH] fix gh-3098: build fails with error in fail2ban setup
 command: use_2to3 is invalid (setuptools 58+)

--- a/setup.py
+++ b/setup.py
@@ -48,7 +48,7 @@
 from glob import glob
 
 from fail2ban.setup import updatePyExec
-
+from fail2ban.version import version
 
 source_dir = os.path.realpath(os.path.dirname(
 	# __file__ seems to be overwritten sometimes on some python versions (e.g. bug of 2.6 by running under cProfile, etc.):
@@ -112,22 +112,12 @@ def update_scripts(self, dry_run=False):
 # Wrapper to specify fail2ban own options:
 class install_command_f2b(install):
 	user_options = install.user_options + [
-		('disable-2to3', None, 'Specify to deactivate 2to3, e.g. if the install runs from fail2ban test-cases.'),
 		('without-tests', None, 'without tests files installation'),
 	]
 	def initialize_options(self):
-		self.disable_2to3 = None
 		self.without_tests = not with_tests
 		install.initialize_options(self)
 	def finalize_options(self):
-		global _2to3
-		## in the test cases 2to3 should be already done (fail2ban-2to3):
-		if self.disable_2to3:
-			_2to3 = False
-		if _2to3:
-			cmdclass = self.distribution.cmdclass
-			cmdclass['build_py'] = build_py_2to3
-			cmdclass['build_scripts'] = build_scripts_2to3
 		if self.without_tests:
 			self.distribution.scripts.remove('bin/fail2ban-testcases')
 
@@ -178,7 +168,6 @@ def run(self):
 if setuptools:
 	setup_extra = {
 		'test_suite': "fail2ban.tests.utils.gatherTests",
-		'use_2to3': True,
 	}
 else:
 	setup_extra = {}
@@ -202,9 +191,6 @@ def run(self):
 		('/usr/share/doc/fail2ban', doc_files)
 	)
 
-# Get version number, avoiding importing fail2ban.
-# This is due to tests not functioning for python3 as 2to3 takes place later
-exec(open(join("fail2ban", "version.py")).read())
 
 setup(
 	name = "fail2ban",
From: sebres <info@sebres.de>
Date: Sun, 19 Sep 2021 18:52:34 +0200
Subject: [PATCH] amend to fix gh-3098: no option `--disable-2to3` anymore

--- a/fail2ban/tests/misctestcase.py
+++ b/fail2ban/tests/misctestcase.py
@@ -111,7 +111,7 @@ def testSetupInstallDryRun(self):
 		supdbgout = ' >/dev/null 2>&1' if unittest.F2B.log_level >= logging.DEBUG else '' # HEAVYDEBUG
 		try:
 			# try dry-run:
-			os.system("%s %s --dry-run install --disable-2to3 --root=%s%s"
+			os.system("%s %s --dry-run install --root=%s%s"
 					  % (sys.executable, self.setup , tmp, supdbgout))
 			# check nothing was created:
 			self.assertTrue(not os.listdir(tmp))
@@ -127,7 +127,7 @@ def testSetupInstallRoot(self):
 		# suppress stdout (and stderr) if not heavydebug
 		supdbgout = ' >/dev/null' if unittest.F2B.log_level >= logging.DEBUG else '' # HEAVYDEBUG
 		try:
-			self.assertEqual(os.system("%s %s install --disable-2to3 --root=%s%s"
+			self.assertEqual(os.system("%s %s install --root=%s%s"
 					  % (sys.executable, self.setup, tmp, supdbgout)), 0)
 
 			def strippath(l):