Block unsupported Python versions when debugging

[int19h]

debugpy doesn't support versions below Python 3.7. However, the diagnostic that it prints out to the console is not reported by VSCode, and thus debugging simply fails with no explanation (see e.g. #19427).

To prevent this, the extension should check Python version number for compatibility before spawning the adapter. To avoid hardcoding the version number, it can be parsed directly from dist-info/METADATA file in the debugpy package; it should contain a line like:

Requires-Python: >=3.7

[karthiknadig]

Thanks for the feature request! We are going to give the community 60 days from when this issue was created to provide 7 👍 upvotes on the opening comment to gauge general interest in this idea. If there's enough upvotes then we will consider this feature request in our future planning. If there's unfortunately not enough upvotes then we will close this issue.

[karthiknadig]

We don't have the dist-info because we unpack the wheels ourselves:

[int19h]

dist-info is part of the wheel archive, so it should be possible to extract it with that intact.

But it it's too much hassle, we can add it to some known location in the debugpy package itself, so that it could be parsed from there.

[brettcannon]

Thank you to everyone who upvoted this issue! Since the community showed interest in this feature request we will leave this issue open as something to consider implementing at some point in the future.

We do encourage people to continue 👍 the first/opening comment as it helps us prioritize our work based on what the community seems to want the most.