Ubuntu 18.04下Python3.10安装django-allauth失败求助

问题 #

在Ubuntu 18.04.6 LTS系统上使用Python3.10，尝试通过pip安装django-allauth时出现报错：

Collecting django-allauth
  Using cached django-allauth-0.51.0.tar.gz (709 kB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [20 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 14, in <module>
        File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 12, in <module>
          import setuptools.version
        File "/usr/lib/python3/dist-packages/setuptools/version.py", line 1, in <module>
          import pkg_resources
        File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 77, in <module>
          __import__('pkg_resources.extern.packaging.requirements')
        File "/usr/lib/python3/dist-packages/pkg_resources/_vendor/packaging/requirements.py", line 9, in <module>
          from pkg_resources.extern.pyparsing import stringStart, stringEnd, originalTextFor, ParseException
        File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
        File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
        File "<frozen importlib._bootstrap>", line 672, in _load_unlocked
        File "<frozen importlib._bootstrap>", line 632, in _load_backward_compatible
        File "/usr/lib/python3/dist-packages/pkg_resources/extern/__init__.py", line 43, in load_module
          __import__(extant)
        File "/usr/lib/python3/dist-packages/pkg_resources/_vendor/pyparsing.py", line 943, in <module>
          collections.MutableMapping.register(ParseResults)
      AttributeError: module 'collections' has no attribute 'MutableMapping'
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

已尝试更新pip、安装setuptools、build-essential、g++，但问题仍未解决，寻求解决方法。

解决方法 #

• 卸载系统自带的旧版setuptools：

  sudo apt remove python3-setuptools
  

• 用Python3.10的pip安装最新版setuptools和wheel：

  python3.10 -m pip install --upgrade setuptools wheel
  

• 重新安装django-allauth：

  python3.10 -m pip install django-allauth
  

若上述方法无效，可使用虚拟环境隔离依赖：

• 创建并激活虚拟环境：

  python3.10 -m venv myenv
  source myenv/bin/activate
  

• 在虚拟环境内安装最新依赖及django-allauth：

  pip install --upgrade setuptools wheel
  pip install django-allauth
  

内容的提问来源于stack exchange，提问作者KarmaLover