为什么他需要 Microsoft Visual C++ 14.0

[liuyug]

Collecting cffi==1.12.2
Using cached cffi-1.12.2.tar.gz (453 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 "", line 2, in
File "", line 34, in
File "C:\Users\liuyug\AppData\Local\Temp\pip-install-5yjml5f1\cffi_e0db617fc070458f88e6d77e196dcdf9\setup.py", line 127, in
if sys.platform == 'win32' and uses_msvc():
File "C:\Users\liuyug\AppData\Local\Temp\pip-install-5yjml5f1\cffi_e0db617fc070458f88e6d77e196dcdf9\setup.py", line 105, in uses_msvc
return config.try_compile('#ifndef _MSC_VER\n#error "not MSVC"\n#endif')
File "c:\python38\lib\distutils\command\config.py", line 225, in try_compile
self._compile(body, headers, include_dirs, lang)
File "c:\python38\lib\distutils\command\config.py", line 132, in _compile
self.compiler.compile([src], include_dirs=include_dirs)
File "c:\python38\lib\distutils_msvccompiler.py", line 327, in compile
self.initialize()
File "c:\python38\lib\distutils_msvccompiler.py", line 224, in initialize
vc_env = _get_vc_env(plat_spec)
File "c:\python38\lib\site-packages\setuptools\msvc.py", line 313, in msvc14_get_vc_env
return _msvc14_get_vc_env(plat_spec)
File "c:\python38\lib\site-packages\setuptools\msvc.py", line 267, in _msvc14_get_vc_env
raise distutils.errors.DistutilsPlatformError(
distutils.errors.DistutilsPlatformError: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
[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.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.