Troubles in installation

[caprilesport]

pnictogen_install_log.txt While trying to install pnictogen through pip the following error happens:

ERROR: Could not find a version that satisfies the requirement pnictogen (fro
[pnictogen_install_log.txt](https://github.com/geem-lab/pnictogen/files/8700307/pnictogen_install_log.txt)
m versions: none)
ERROR: No matching distribution found for pnictogen

Even though when using isavailable it appears as an valid package.

$ isavailable pnictogen
pnictogen is…     available 🎉 on PyPI.

To reproduce: It's the first time I'm trying to install, so I just ran pip install -U pnictogen

Trying to install locally (pip install -U -e .) also fails

OS: Pop-OS 20.04

A log from the local installation is also uploaded here.

It seems like it's a problem related to the installation of openbabel, which is funny because it is installed locally.