# Buggy code
def setupenv(self):
    if self.envconfig._missing_subs:
        self.status = (
            "unresolvable substitution(s): {}. "
            "Environment variables are missing or defined recursively.".format(
                ",".join(["'{}'".format(m) for m in self.envconfig._missing_subs]),
            )
        )
        return
    if not self.matching_platform():
        self.status = "platform mismatch"
        return  # we simply omit non-matching platforms
    with self.new_action("getenv", self.envconfig.envdir) as action:
        self.status = 0
        default_ret_code = 1
        envlog = self.env_log
        try:
            status = self.update(action=action)
        except IOError as e:
            if e.args[0] != 2:
                raise
            status = (
                "Error creating virtualenv. Note that spaces in paths are "
                "not supported by virtualenv. Error details: {!r}".format(e)
            )
        except tox.exception.InvocationError as e:
            status = e
        except tox.exception.InterpreterNotFound as e:
            status = e
            if self.envconfig.config.option.skip_missing_interpreters == "true":
                default_ret_code = 0
        if status:
            str_status = str(status)
            command_log = envlog.get_commandlog("setup")
            command_log.add_command(["setup virtualenv"], str_status, default_ret_code)
            self.status = status
            if default_ret_code == 0:
                reporter.skip(str_status)
            else:
                reporter.error(str_status)
            return False
        command_path = self.getcommandpath("python")
        envlog.set_python_info(command_path)
        return True


# Traceback (AttributeError)
tox -vv
using tox.ini: /home/jayvdb/projects/tox/my-tox-tests/tests/tox.ini (pid 23538)
removing /home/jayvdb/projects/tox/my-tox-tests/tests/.tox/log
[wikimedia] tox-wikimedia is enabled
Traceback (most recent call last):
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/bin/tox", line 8, in <module>
sys.exit(cmdline())
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/tox/session/__init__.py", line 44, in cmdline
main(args)
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/tox/session/__init__.py", line 65, in main
config = load_config(args)
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/tox/session/__init__.py", line 81, in load_config
config = parseconfig(args)
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/tox/config/__init__.py", line 281, in parseconfig
pm.hook.tox_configure(config=config)  # post process config object
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/pluggy/hooks.py", line 286, in __call__
return self._hookexec(self, self.get_hookimpls(), kwargs)
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/pluggy/manager.py", line 93, in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/pluggy/manager.py", line 84, in <lambda>
self._inner_hookexec = lambda hook, methods, kwargs: hook.multicall(
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/pluggy/callers.py", line 208, in _multicall
return outcome.get_result()
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/pluggy/callers.py", line 80, in get_result
raise ex[1].with_traceback(ex[2])
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/pluggy/callers.py", line 187, in _multicall
res = hook_impl.function(*args)
File "/home/jayvdb/.cache/tox/my-tox-tests/py38-tox3_20-other/lib/python3.8/site-packages/tox_wikimedia/__init__.py", line 93, in tox_configure
if dep in cdep.name:
AttributeError: 'str' object has no attribute 'name'

# Fixed code
def setupenv(self):
    if self.envconfig._missing_subs:
        self.status = (
            "unresolvable substitution(s):\n    {}\n"
            "Environment variables are missing or defined recursively.".format(
                "\n    ".join(
                    [
                        "{}: '{}'".format(section_key, exc.name)
                        for section_key, exc in sorted(
                            self.envconfig._missing_subs.items()
                        )
                    ],
                ),
            )
        )
        return
    if not self.matching_platform():
        self.status = "platform mismatch"
        return  # we simply omit non-matching platforms
    with self.new_action("getenv", self.envconfig.envdir) as action:
        self.status = 0
        default_ret_code = 1
        envlog = self.env_log
        try:
            status = self.update(action=action)
        except IOError as e:
            if e.args[0] != 2:
                raise
            status = (
                "Error creating virtualenv. Note that spaces in paths are "
                "not supported by virtualenv. Error details: {!r}".format(e)
            )
        except tox.exception.InvocationError as e:
            status = e
        except tox.exception.InterpreterNotFound as e:
            status = e
            if self.envconfig.config.option.skip_missing_interpreters == "true":
                default_ret_code = 0
        if status:
            str_status = str(status)
            command_log = envlog.get_commandlog("setup")
            command_log.add_command(["setup virtualenv"], str_status, default_ret_code)
            self.status = status
            if default_ret_code == 0:
                reporter.skip(str_status)
            else:
                reporter.error(str_status)
            return False
        command_path = self.getcommandpath("python")
        envlog.set_python_info(command_path)
        return True