Support pydantic v2

[tefra]

📒 Description

The goal is to add support for pydantic v2 models.

• Update filters to generate pydantic BaseModel subsclasses
• Update Compat layer
• Update fixtures
• Pass all the sample suites

🔗 What I've Done

Write a description of the steps taken to resolve the issue

💬 Comments

A place to write any comments to the reviewer.

🛫 Checklist

• Updated docs
• Added unit-tests

[codecov]

Codecov Report

Attention: Patch coverage is 93.65079% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 97.26%. Comparing base (729ac5e) to head (294939c).

Files	Patch %	Lines
xsdata_pydantic/compat.py	93.54%	2 Missing ⚠️
xsdata_pydantic/generator.py	90.90%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #23      +/-   ##
==========================================
+ Coverage   95.57%   97.26%   +1.68%     
==========================================
  Files           6        7       +1     
  Lines         113      146      +33     
  Branches       11       15       +4     
==========================================
+ Hits          108      142      +34     
+ Misses          5        3       -2     
- Partials        0        1       +1     

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[fleimgruber]

@tefra any plans on continuing this effort? Could you give me a rough idea of status and missing pieces then I can have a look and eventually have a shot at this.

[tefra]

@tefra any plans on continuing this effort? Could you give me a rough idea of status and missing pieces then I can have a look and eventually have a shot at this.

I am so unbelievably stretched, honestly @fleimgruber I don't know, for the next couple of months I don't see how. Even then pydantic moves so fast this project is really doomed, I should admit defeat and simply shut it down.

[fleimgruber]

Thanks for checking back and your honesty. Maybe pydantic stabilizes at some point and then this can be picked up again - I think this project is a good idea!

[tefra]

Pydantic has locked us out, there is no way to add additional metadata per field, the extras are deprecated and the json_schema_extra expects json values...

Creating true pydantic models, is impossible.... back to the drawing board