AttributeError：模块 'sipbuild.api' 没有 PyQt5 5.15.0 的属性 'prepare_metadata_for_build_wheel'

Question

新手上路，请多包涵

我尝试安装的程序需要安装 PyQt5 5.15.0 ，这给了我这个错误。奇怪的是，安装适用于最新版本的 PyQt5 (5.15.2)，但此程序特别需要 5.15.0。

命令输出：

 Collecting PyQt5==5.15.0
  Using cached PyQt5-5.15.0.tar.gz (3.3 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... error
    ERROR: Command errored out with exit status 1:
     command: 'c:\users\mshal\appdata\local\programs\python\python39\python.exe' 'C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip_vendor\pep517_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\mshal\AppData\Local\Temp\tmp41s11ev6'
         cwd: C:\Users\mshal\AppData\Local\Temp\pip-install-sfw90hvc\pyqt5_e2cc46859b554da7b84798abae5378ba
    Complete output (31 lines):
    Traceback (most recent call last):
      File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip_vendor\pep517_in_process.py", line 126, in prepare_metadata_for_build_wheel
        hook = backend.prepare_metadata_for_build_wheel
    AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel'

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip_vendor\pep517_in_process.py", line 280, in <module>
        main()
      File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip_vendor\pep517_in_process.py", line 263, in main
        json_out['return_val'] = hook(**hook_input['kwargs'])
      File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip_vendor\pep517_in_process.py", line 130, in prepare_metadata_for_build_wheel
        return _get_wheel_metadata_from_wheel(backend, metadata_directory,
      File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip_vendor\pep517_in_process.py", line 159, in _get_wheel_metadata_from_wheel
        whl_basename = backend.build_wheel(metadata_directory, config_settings)
      File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\api.py", line 51, in build_wheel
        project = AbstractProject.bootstrap('pep517')
      File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\abstract_project.py", line 83, in bootstrap
        project.setup(pyproject, tool, tool_description)
      File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\project.py", line 479, in setup
        self.apply_user_defaults(tool)
      File "project.py", line 62, in apply_user_defaults
        super().apply_user_defaults(tool)
      File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\pyqtbuild\project.py", line 79, in apply_user_defaults
        super().apply_user_defaults(tool)
      File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\project.py", line 225, in apply_user_defaults
        self.builder.apply_user_defaults(tool)
      File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\pyqtbuild\builder.py", line 66, in apply_user_defaults
        raise PyProjectOptionException('qmake',
    sipbuild.pyproject.PyProjectOptionException
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\mshal\appdata\local\programs\python\python39\python.exe' 'C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip_vendor\pep517_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\mshal\AppData\Local\Temp\tmp41s11ev6' Check the logs for full command output.

我使用的是最新版本的 pip。关于这个问题的根本原因有什么想法吗？