Check OSError when importing cryptodome

[DUOLabs333]

(The module may exist, but the so files might not).

IMPORTANT: PRs without the template will be CLOSED

Description of your pull request and other information

Before submitting a pull request make sure you have:

• At least skimmed through contributing guidelines including yt-dlp coding conventions
• Searched the bugtracker for similar pull requests
• Checked the code with flake8 and ran relevant tests

In order to be accepted and merged into yt-dlp each piece of code must be in public domain or released under Unlicense. Check one of the following options:

• I am the original author of this code and I am willing to release it under Unlicense
• I am not the original author of this code but it is in public domain or released under Unlicense (provide reliable evidence)

What is the purpose of your pull request?

• Fix or improvement to an extractor (Make sure to add/update tests)
• New extractor (Piracy websites will not be accepted)
• Core bug fix/improvement
• New feature (It is strongly recommended to open an issue first)

[coletdjnz]

(The module may exist, but the so files might not).

Do you know why this happens? This sounds like an issue with your installation 😕

[DUOLabs333]

No, I intentionally did that (I want to avoid C dependencies when possible. So, I want to set up a venv with yt-dlp without any non-Python dependencies).

[pukkandan]

Why would you intentionally install a dependency improperly and expect us to handle that case? If you don't want the dependency, just don't install it at all

[DUOLabs333]

Or, you can offer Cryptodome, mutagen, etc., as optional dependencies, which can be installed as yt_dlp[full].

[pukkandan]

Most people would prefer to have these dependencies when just doing pip install yt-dlp. If pypa/setuptools#1139 was a thing, I would have put them behind extras. But unfortunately, pip does not currently provide a way to setup recommended/default dependencies.

Since yt-dlp has no mandatory dependencies at all, putting everything behind an extra only makes it harder for newbies with no real benefit. You can simply use --no-deps instead