做到 pip install -r requirements.txt 这个步骤出错，前面都正常，在 anaconda 里完成的

Preparing metadata (pyproject.toml) ... error
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [275 lines of output]

...

TypeError: CCompiler_spawn() got an unexpected keyword argument 'env'
[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.