m1 macos can't install hdbcli

I have a script that starts with

import pandas as pd
from sqlalchemy import create_engine, text

hana_engine = create_engine(os.getenv('RCF_HANA_URI'), echo=False)
hana_conn = hana_engine.connect()

postgres_engine = create_engine(os.getenv('RCF_POSTGRES_URI'), echo=False)

I need to run it on my m1 macbook. I tried using conda to create an environment with all the necessary dependencies

conda create --name env pandas sqlalchemy psycopg2 conda activate env

after python script.py I was missing sqlalchemy-hana but conda install sqlalchemy-hana and pip install sqlalchemy-hana failed because they couldn't find a package with that name with noarch or arm64 for python 3.9.

I tried other python versions

conda create --name env pandas sqlalchemy psycopg2 python=3.5

this failed for arm64 for python 3.5-3.7. 3.8 worked.

conda create --name env2 pandas sqlalchemy psycopg2 python=3.8 conda activate env2

now pip install sqlalchemy-hana worked. I ran the script again and got

ModuleNotFoundError: No module named 'hdbcli'

So I tried to install it

pip install hdbcli         
ERROR: Could not find a version that satisfies the requirement hdbcli (from versions: none)
ERROR: No matching distribution found for hdbcli

And this is where I am stuck. Is there a way to get hdbcli to work on an m1 mac?