Request: RDKit and DeepChem

Title: Request to Support Python 3.9 for RDKit + DeepChem Deployment

Hi Streamlit team,
My app uses RDKit and DeepChem which only support Python 3.9 (via Conda).
Streamlit Cloud now forces Python 3.10+, causing deployment failure.
Is there any way to continue using Python 3.9 or enable Conda/Docker environments?
Thank you!

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