[Install] Rework optional imports

[riedgar-ms]

Trying to make optional imports behave more uniformly, with support in setup.py for lots of possible extras.

[riedgar-ms]

Tagging @ryanpeach @hudson-ai and @Harsha-Nori , since I'm sure you will all have suggestions :-)

So far, I've just done some work on adding a schemas extra, which handles jsonschema and pydantic. I have also added an extra job to the QA workflow, to make sure that the minimal install can be imported successfully.

[riedgar-ms]

Next up would be server and all of the various supported models (each in their own extras).

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 86.95652% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 62.49%. Comparing base (9862750) to head (d91b18a).

Files	Patch %	Lines
guidance/_server.py	76.92%	3 Missing ⚠️
guidance/library/_json.py	62.50%	3 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #767      +/-   ##
==========================================
- Coverage   65.69%   62.49%   -3.21%     
==========================================
  Files          55       55              
  Lines        4064     4058       -6     
==========================================
- Hits         2670     2536     -134     
- Misses       1394     1522     +128     

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[riedgar-ms]

@ryanpeach and @Harsha-Nori , I've updated this in response to comments, and also extracted openai as an 'extra.' While doing this, I discovered that pydantic is actually a dependency of openai, thereby explaining why some things surprising things had been working.

I have tried to give pydantic the same treatment, but I was unable to get things working. I could see pip install pydantic, but then fail to load pydantic.json-schema which was a bit strange.

[slundberg]

Thanks @riedgar-ms! I also ran into this when I dropped the openai dep. LGTM

[ryanpeach]

Much better!

[ryanpeach]

Tbh pydantic might become a useful required dependency. Ever thought of just keeping it?

[riedgar-ms]

Tbh pydantic might become a useful required dependency. Ever thought of just keeping it?

I'm keeping it required for now. It is something which might be worth keeping generally.

[Harsha-Nori]

LGTM too. I'm also ok with Pydantic being a required import per @ryanpeach's suggestion

[hudson-ai]

Sorry for being late to the party! Looks good. Thanks @riedgar-ms