An error message indicating metadata-generation-failed is displayed when installing the virtual environment in linux

This is usually because setuptools is not installed correctly.

Verify that the pip package manager is installed, if not you can do so by using the following command:

sudo apt-get install python-pip
Verify that setuptools is installed correctly. If it is not installed, you can install it with the following command:

sudo apt-get install python-setuptools
Upgrade setuptools:
sudo easy_install -u setuptools
Clear cache:

sudo rm -rf ~/.cache/pip/
Reinstall virtual environment:

sudo pip install virtualenv
Still does not solve the problem, you can try to remove the old version of setuptools and reinstall the latest version.

csharp
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sudo apt-get remove python-setuptools
sudo pip install setuptools

Run the batch installation command

pip install -r requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple

, execute

PIP install setuptools = = 57.5.0 -i < a href = "https://pypi.tuna.tsinghua.edu.cn/simple" target="_blank"> https://pypi.tuna.tsinghua.edu.cn/simple

command