Avoid keeping config dir in path

[elupus]

Breaking change

Previous versions of home assistant would load python modules/packages from directly in your config directory. This has the ugly issue that accidental python files in your configuration directory would override globally installed packages.

Move any custom python dependency you need to a deps subfolder to retain previous behaviour.

Proposed change

We add config dir temporarily to sys.path to add custom components module to global python cache, then remove it again.

Custom dependencies should be added to a deps/ subfolder of your config directory.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
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• Tests have been added to verify that the new code works.

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• Documentation added/updated for www.home-assistant.io

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[frenck]

I think this will affect our Python scripts?

https://www.home-assistant.io/integrations/python_script/

[elupus]

I think this will affect our Python scripts?

https://www.home-assistant.io/integrations/python_script/

Sounds plausible. Will investigate that.

[elupus]

I think this will affect our Python scripts?

https://www.home-assistant.io/integrations/python_script/

Does not seem so. Python scripts are loaded from file manually and executed using a special executor. They don't require config to be in path. I've tested with an test script and the tests for these do pass.

[frenck]

Looks good to me, thanks @elupus 👍

../Frenck