报错信息：
Downloading https://simulation.vnpy.com/packages/vnpy_esunny-9.0.3.16.0.tar.gz (664 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 664.1/664.1 kB 40.9 MB/s eta 0:00:00
Installing build dependencies ... done
Getting requirements to build wheel ... done
Installing backend dependencies ... done
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
Preparing metadata (pyproject.toml) ... error
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.

换了台新电脑，安装了c++环境，依旧报这个错

Collecting vnpy-esunny==9.0.3.16.0
Downloading https://simulation.vnpy.com/packages/vnpy_esunny-9.0.3.16.0.tar.gz (664 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 664.1/664.1 kB 40.9 MB/s eta 0:00:00
Installing build dependencies ... done
Getting requirements to build wheel ... done
Installing backend dependencies ... done
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
Preparing metadata (pyproject.toml) ... error
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.

[notice] A new release of pip available: 22.3.1 -> 26.0.1
[notice] To update, run: C:\veighna_elite_simulation\python.exe -m pip install --upgrade pip
更新任务执行完毕，请按任意键退出后，重新启动VeighNa Elite

一模一样的错误

已经修复，请再运行更新试试