ERROR: Could not find a version that satisfies the requirement greenaddress (from green-cli) ERROR: No matching distribution found for greenaddress

Hello,

I receive the error:
```
ERROR: Could not find a version that satisfies the requirement greenaddress (from green-cli)
ERROR: No matching distribution found for greenaddress
```

When trying to install on Arch Linux after completing the following setup:

```
git clone https://github.com/Blockstream/green_cli
cd green_cli

python3 -m venv green_env
source green_env/bin/activate
pip install -r requirements.txt
pip install .
```

Am I missing some dependencies? Thank you in advance.