Unable to install python extension in restricted network (offline install)

[clintb-msft]

Windows 11 Pro x64, in a restricted network scenario, very few outbound fqdns allowed
 
I've tried the recommended method using the vsix and below command
code --install-extension .\ms-python.python-2024.13.2024082701.vsix --log trace

Seeing this exception in the log
TRACE [File Watcher (node.js)] [CHANGED] c:\Users\59e04c8e62.vscode\extensions.763f4210-8d28-4223-a577-f6647b38280a
ERR Error while installing the extension ms-python.debugpy Client network socket disconnected before secure TLS connection was established vscode-userdata:/c%3A/Users/59e04c8e62/.vscode/extensions/extensions.json
ERR [uncaught exception in CLI]: Client network socket disconnected before secure TLS connection was established: Error: Client network socket disconnected before secure TLS connection was established
at TLSSocket.onConnectEnd (node:_tls_wrap:1727:19)
at TLSSocket.emit (node:events:531:35)
at endReadableNT (node:internal/streams/readable:1696:12)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
TRACE [File Watcher (node.js)] [raw] ["change"] .763f4210-8d28-4223-a577-f6647b38280a
TRACE [File Watcher (node.js)] [CHANGED] c:\Users\59e04c8e62.vscode\extensions.763f4210-8d28-4223-a577-f6647b38280a
ERR Error while installing the extension ms-python.vscode-pylance Client network socket disconnected before secure TLS connection was established vscode-userdata:/c%3A/Users/59e04c8e62/.vscode/extensions/extensions.json
ERR [uncaught exception in CLI]: Client network socket disconnected before secure TLS connection was established: Error: Client network socket disconnected before secure TLS connection was established
at TLSSocket.onConnectEnd (node:_tls_wrap:1727:19)
at TLSSocket.emit (node:events:531:35)
at endReadableNT (node:internal/streams/readable:1696:12)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21)

I tried installing pylance and pydebug first, but they also fail, and I also attempted to install them all 3 together in the same command, but still no luck
code --install-extension .\ms-python.python-2024.13.2024082701.vsix --install-extension .\ms-python.vscode-pylance-2024.8.103.vsix --install-extension .\ms-python.debugpy-2024.11.2024082801.vsix --log trace

Users have to manually bring their extensions and install, but we can't see how to prevent the dependency failures. Can you please suggest how we should proceed here to get these installed in an offline/restricted network?

Thanks!

[karthiknadig]

This should be something VS Code can answer better. Can you ask there?

[clintb-msft]

I can install a few other extensions on this system without issue. (like esbenp.prettier-vscode for example)

It seems like certain extensions make external calls, and that fails the install. I've seen mention of this a few years back, but though it was resolved (non-blocking), although maybe this was specifically for calls to the marketplace: microsoft/vscode#142812 (comment)

My point is that the python extension is failing here, where others do succeed, so do you still believe this should be better answered by vscode?

[karthiknadig]

Python extension does not actually make these calls. It is the installer. Python extension depends on debugger extension. When python extension is being installed the installer will look for and install its dependencies. The outgoing network call is from the installer attempting to install these requirements. Not sure why it is doing that, when dependencies are provided as VSIX as well.

[clintb-msft]

Thanks for that explanation. Created an issue over there, for reference
microsoft/vscode#227166