pip 20.3.3: TypeError: make_requirement_preparer() got an unexpected keyword argument 'wheel_download_dir'

[marcelloromani]

$ pip-compile --allow-unsafe --generate-hashes requirements.txt

Traceback (most recent call last):
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/bin/pip-compile", line 8, in <module>
    sys.exit(cli())
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/piptools/scripts/compile.py", line 458, in cli
    results = resolver.resolve(max_rounds=max_rounds)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/piptools/resolver.py", line 173, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/piptools/resolver.py", line 278, in _resolve_one_round
    their_constraints.extend(self._iter_dependencies(best_match))
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/piptools/resolver.py", line 388, in _iter_dependencies
    dependencies = self.repository.get_dependencies(ireq)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/piptools/repositories/local.py", line 75, in get_dependencies
    return self.repository.get_dependencies(ireq)
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/piptools/repositories/pypi.py", line 231, in get_dependencies
    self._dependencies_cache[ireq] = self.resolve_reqs(
  File "/Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/piptools/repositories/pypi.py", line 155, in resolve_reqs
    preparer = self.command.make_requirement_preparer(
TypeError: make_requirement_preparer() got an unexpected keyword argument 'wheel_download_dir'

Environment Versions

1. OS Type: Mac OS Big Sur 11.1
2. Python version: $ python -V Python 3.8.6
3. pip version: $ pip --version pip 20.3.3 from /Users/marcelloromani/dev/xcov19/covidX/venv/lib/python3.8/site-packages/pip (python 3.8)
4. pip-tools version: $ pip-compile --version pip-compile, version 5.3.1

Steps to replicate

$ pip-compile --allow-unsafe --generate-hashes requirements.txt

The error appears immediately.

Similar to #1228

[atugushev]

Hello @marcelloromani,

Could you upgrade pip-tools to the latest 5.5.0 version?

$ python -m pip install --upgrade pip-tools

[marcelloromani]

Requirement already satisfied: pip-tools in ./venv/lib/python3.8/site-packages (5.3.1)
Collecting pip-tools
  Using cached pip_tools-5.5.0-py2.py3-none-any.whl (45 kB)
Requirement already satisfied: click>=7 in ./venv/lib/python3.8/site-packages (from pip-tools) (7.1.2)
Requirement already satisfied: pip>=20.1 in ./venv/lib/python3.8/site-packages (from pip-tools) (20.3.3)
Installing collected packages: pip-tools
  Attempting uninstall: pip-tools
    Found existing installation: pip-tools 5.3.1
    Uninstalling pip-tools-5.3.1:
      Successfully uninstalled pip-tools-5.3.1
Successfully installed pip-tools-5.5.0```

That did the trick, thanks!

[marcelloromani]

Solution: upgrade pip-tools to latest version, 5.5.0 at the time of writing:

$ python -m pip install --upgrade pip-tools