Allow overriding the Ollama base URL

[sqlreport]

#1004

• import TextField from providers
• add base_url to allow custom url for ollama embeddings provider

[sqlreport]

I am unable to update the label. Can maintainers help on this? @dlqqq / @krassowski / @srdas / @3coins

[dlqqq]

@sqlreport The issue you linked (langchain-ai/langchain#25022) seems to imply that the LangChain class does not accept a base_url keyword argument, which is how config fields get passed to LangChain in Jupyter AI. If the upstream LangChain class doesn't support overriding the base URL, then adding this field won't allow you to use a different base URL.

Have you tested this branch locally to see if you're able to use a different base URL for Ollama embeddings? If so, I can approve and merge this.

[hockeymomonow]

@dlqqq I have verified the fix on my jlpm dev environment.

[hockeymomonow]

[sqlreport]

closing the PR as main shifted too much