Support launching xonsh from a semi-warmed state

[mariusvniekerk]

Desired Behavior

When running xonsh i'd like it to find an existing prewarmed xonsh that has already paid the import tax, but hasn't started fully yet and fork that process and then initialize the new one as my interpreter.

This should allow xonsh to have dramatically faster startup times which is particularly useful if you use it as your editor in tools like vscode/pycharm and start new terminals frequently.

For community

⬇️ Please click the 👍 reaction instead of leaving a +1 or 👍 comment

[scopatz]

Yes, this is an awesome idea!

[anki-code]

The similar idea with proof of concept - #2473

[anki-code]

Using xonsh-prewarmed you can reserve xonsh session in background.