~ yay -S python-devtools
:: Checking for conflicts...
:: Checking for inner conflicts...
[Aur:1]  python-devtools-0.6-2

  1 python-devtools                  (Build Files Exist)
==> Packages to cleanBuild?
==> [N]one [A]ll [Ab]ort [I]nstalled [No]tInstalled or (1 2 3, 1-3, ^4)
==>
:: PKGBUILD up to date, Skipping (1/1): python-devtools
  1 python-devtools                  (Build Files Exist)
==> Diffs to show?
==> [N]one [A]ll [Ab]ort [I]nstalled [No]tInstalled or (1 2 3, 1-3, ^4)
==>
:: (1/1) Parsing SRCINFO: python-devtools
==> Making package: python-devtools 0.6-2 (Mon 26 Oct 2020 03:16:06 PM EET)
==> Retrieving sources...
  -> Found python-devtools-0.6.tar.gz
  -> Found LICENSE
==> Validating source files with sha256sums...
    python-devtools-0.6.tar.gz ... Passed
    LICENSE ... Passed
==> Validating source files with b2sums...
    python-devtools-0.6.tar.gz ... Passed
    LICENSE ... Passed
==> Making package: python-devtools 0.6-2 (Mon 26 Oct 2020 03:16:09 PM EET)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found python-devtools-0.6.tar.gz
  -> Found LICENSE
==> Validating source files with sha256sums...
    python-devtools-0.6.tar.gz ... Passed
    LICENSE ... Passed
==> Validating source files with b2sums...
    python-devtools-0.6.tar.gz ... Passed
    LICENSE ... Passed
==> Removing existing $srcdir/ directory...
==> Extracting sources...
  -> Extracting python-devtools-0.6.tar.gz with bsdtar
==> Sources are ready.
==> Making package: python-devtools 0.6-2 (Mon 26 Oct 2020 03:16:10 PM EET)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> WARNING: Using existing $srcdir/ tree
==> Removing existing $pkgdir/ directory...
==> Starting build()...
running build
running build_py
creating build
creating build/lib
creating build/lib/devtools
copying devtools/version.py -> build/lib/devtools
copying devtools/timer.py -> build/lib/devtools
copying devtools/__init__.py -> build/lib/devtools
copying devtools/debug.py -> build/lib/devtools
copying devtools/prettier.py -> build/lib/devtools
copying devtools/ansi.py -> build/lib/devtools
copying devtools/utils.py -> build/lib/devtools
==> Starting check()...
running test
WARNING: Testing via this command is deprecated and will be removed in a future version. Users looking for a generic test entry point independent of test runner are encouraged to use tox.
running egg_info
writing devtools.egg-info/PKG-INFO
writing dependency_links to devtools.egg-info/dependency_links.txt
writing requirements to devtools.egg-info/requires.txt
writing top-level names to devtools.egg-info/top_level.txt
reading manifest file 'devtools.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'devtools.egg-info/SOURCES.txt'
running build_ext
/usr/lib/python3.8/unittest/loader.py
                                     tyle.resetm:205
                                                    tyle.resetm loadTestsFromName
                                                                                 tyle.resetm (error parsing code, unable to find "debug" function statement)
                                                                                                                                                            tyle.resetm

Traceback (most recent call last):
  File "setup.py", line 21, in <module>
    setup(
  File "/usr/lib/python3.8/site-packages/setuptools/__init__.py", line 153, in setup
    return distutils.core.setup(**attrs)
  File "/usr/lib/python3.8/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/lib/python3.8/distutils/dist.py", line 966, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command
    cmd_obj.run()
  File "/usr/lib/python3.8/site-packages/setuptools/command/test.py", line 232, in run
    self.run_tests()
  File "/usr/lib/python3.8/site-packages/setuptools/command/test.py", line 250, in run_tests
    test = unittest.main(
  File "/usr/lib/python3.8/unittest/main.py", line 100, in __init__
    self.parseArgs(argv)
  File "/usr/lib/python3.8/unittest/main.py", line 124, in parseArgs
    self._do_discovery(argv[2:])
  File "/usr/lib/python3.8/unittest/main.py", line 244, in _do_discovery
    self.createTests(from_discovery=True, Loader=Loader)
  File "/usr/lib/python3.8/unittest/main.py", line 154, in createTests
    self.test = loader.discover(self.start, self.pattern, self.top)
  File "/usr/lib/python3.8/unittest/loader.py", line 349, in discover
    tests = list(self._find_tests(start_dir, pattern))
  File "/usr/lib/python3.8/unittest/loader.py", line 405, in _find_tests
    tests, should_recurse = self._find_test_path(
  File "/usr/lib/python3.8/unittest/loader.py", line 483, in _find_test_path
    tests = self.loadTestsFromModule(package, pattern=pattern)
  File "/usr/lib/python3.8/site-packages/setuptools/command/test.py", line 50, in loadTestsFromModule
    tests.append(self.loadTestsFromName(submodule))
  File "/usr/lib/python3.8/unittest/loader.py", line 211, in loadTestsFromName
    raise TypeError("calling %s returned %s, not a test" %
TypeError: calling <devtools.debug.Debug object at 0x7f7c40b0ed30> returned None, not a test
==> ERROR: A failure occurred in check().
    Aborting...
error making: python-devtools