[Bug]: v0.5.5 uses Pydantic 2 features while depending on Pydantic 1

[rChaoz]

What happened?

I have a project still using Pydantic 1 and I recently tried upgrading chromadb-client from 0.5.4.dev0 to 0.5.5.dev0, failing with an error in types.py, which uses model_fields, a feature added in Pydantic 2:

chroma/chromadb/types.py

Lines 99 to 100 in 45aba8a

	if key in self.model_fields:
	return getattr(self, key)

But ChromaDB depends on Pydantic 1+:

chroma/pyproject.toml

Lines 17 to 19 in 45aba8a

	dependencies = [
	'build >= 1.0.3',
	'pydantic >= 1.9',

Versions

ChromaDB v0.5.5, ChromaDB-Client v0.5.5-dev0

Relevant log output

collection has no attribute model_fields

[tazarov]

@rChaoz, thanks for reporting this. We're aware of the problem and have a PR pending to make Chroma compatible with both 1.9 and 2.x - #2229