How to install vdirsyncer on Android?

I would like to use [vdirsyncer](https://github.com/pimutils/vdirsyncer) on android. To do so, I first installed [termux](https://f-droid.org/en/packages/com.termux/) and than ran:

apt install python python3
pip3 install vdirsyncer

However, that throws the warning: > Warning pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available. Then it tries that 4 times, after which it says: > Could not fetch URL https://pypi.org/simple/vdirsyncer there was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org, port=443) > Error: could not find a version that satisfies the requirement vdirsyncer (from versions: none) So it seems to me I should either ensure ssl module is available on Python, or reconfigure pip with locations that do not require TLS/SSL. I have not yet found out how to do that, hence, I would like to ask: How can one install vdirsyncer on Android?