update to pydantic>2

[jgunstone]

https://docs.pydantic.dev/latest/migration/

[JuanCab]

Are you open to a pull request that would fix this by using a try.. except.. block to handle the import? Something like:

try:
    import pydantic.v1 as pydantic
except ImportError:
    import pydantic as pydantic

This should in principle use the v1 API for BaseClass when using pydantic version 2 according to the documentation here.

[jgunstone]

hi there -

good point.

I actually pinned to old pydantic here:
75334be

the purpose of your suggestion would be to allow users of pydantic v2 still use old ipyautoui without dependency issues ?

I'm currently working on a new release that will require pydantic v2 (and will not be compatible with v1) and benefit from some of its new features

[JuanCab]

I noticed it was pinned to pydantic<2 (I had to pin my own environment to avoid incompatibility), I just thought it might be a way to support newer pydantic installs if migrating pyautoui proved slow going.

[jgunstone]

I just tried implementing the try: except: block as @JuanCab suggests (as the update is indeed going slightly slower than I hoped... ) -

I'm running into the following issue:

import pydantic.v1 as pydantic

class Test(BaseModel):
    __root__: list[str] = ["a", "b"]

# >>>TypeError: To define root models, use `pydantic.RootModel` rather than a field called '__root__'

root models are used for the iterable and editgrid objects, reimplementing them as suggested above would then be incompatible with pydantic">1,<2" -

so I think we'll probably have to wait until the next major update which will use pydantic v2 rather than backporting to the v1 that is available in v2