TypeError: 'NoneType' object is not callable

[DenisMelnik]

Issue description

Getting erorr during pipenv install command after upgrade to the latest v2022.4.20 version.
It works with v2022.4.8 version.

Expected result

Install packages.

Actual result

Installing dependencies from Pipfile.lock (529d2f)...
Traceback (most recent call last):
  File "/usr/local/bin/pipenv", line 8, in <module>
    sys.exit(cli())
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 1128, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/cli/options.py", line 56, in main
    return super().main(*args, **kwargs, windows_expand_args=False)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 1053, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 1659, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 1395, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 754, in invoke
    return __callback(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/click/decorators.py", line 84, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/click/core.py", line 754, in invoke
    return __callback(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pipenv/cli/command.py", line 241, in install
    site_packages=state.site_packages,
  File "/usr/local/lib/python3.6/site-packages/pipenv/core.py", line [210](https://code.devops.fds.com/devops/tfc/-/jobs/1968838#L210)2, in do_install
    keep_outdated=keep_outdated,
  File "/usr/local/lib/python3.6/site-packages/pipenv/core.py", line 1343, in do_init
    pypi_mirror=pypi_mirror,
  File "/usr/local/lib/python3.6/site-packages/pipenv/core.py", line 870, in do_install_dependencies
    project, normal_deps, procs, failed_deps_queue, requirements_dir, **install_kwargs
  File "/usr/local/lib/python3.6/site-packages/pipenv/core.py", line 728, in batch_install
    dep for dep in deps_to_install if not project.environment.is_satisfied(dep)
  File "/usr/local/lib/python3.6/site-packages/pipenv/core.py", line 728, in <listcomp>
    dep for dep in deps_to_install if not project.environment.is_satisfied(dep)
  File "/usr/local/lib/python3.6/site-packages/pipenv/environment.py", line 859, in is_satisfied
    elif req.line_instance.specifiers is not None:
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/requirementslib/models/requirements.py", line 2553, in line_instance
    self.line_instance = self.get_line_instance()
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/requirementslib/models/requirements.py", line 2547, in get_line_instance
    return Line(line)
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/requirementslib/models/requirements.py", line 171, in __init__
    self.parse()
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/requirementslib/models/requirements.py", line 1289, in parse
    self.parse_extras()
  File "/usr/local/lib/python3.6/site-packages/pipenv/vendor/requirementslib/models/requirements.py", line 577, in parse_extras
    self.line, extras = pip_shims.shims._strip_extras(self.line)
TypeError: 'NoneType' object is not callable

[Moribund7]

Got exactly same issue today.

[jseiser]

Same here on a bunch of Redhat 7/8 boxes running Python 3.9

[matteius]

The original issue poster got this because python 3.6 support is dropped. Not sure about the rest of the comments because no one is providing enough detail. Please follow the template for reporting on issues.

[matteius]

#5065

[matteius]

@jseiser If you got a similar error on Python 3.9 please file a new bug report. I am closing this one out as there is nothing we can do to restore python 3.6 support. This changed to finish dropping 3.6 was merged to main to drop it from setup.py: #5066