Pip Proxy Configuration with CNTLM

Attempting to utilize pip behind a proxy can encounter challenges. While CNTLM is a potential solution, it requires proper configuration.

One method to determine if CNTLM is correctly set up involves executing the command:

cntlm.exe -c cntlm.ini -I -M http://google.com

However, if this command returns an error, it indicates issues with the proxy setup.

An alternative method is to export the https_proxy environment variable with the format:

export https_proxy=http://web-proxy.mydomain.com

Ensure to use https_proxy rather than http_proxy. Subsequently, execute pip with the -E flag to apply the environment variable:

sudo -E pip install somepackage

If successful, this approach should allow pip to access the proxy via https_proxy without requiring explicit proxy configuration in the command.