Comment 18 for bug 1991606

Finally https://github.com/pypa/setuptools/issues/3772 gives reasoning and a test case:

```
docker run -it --rm --entrypoint=bash ubuntu:focal
apt update && apt install python3 python3-pip python3-distro-info python-debian libfuzzy-dev -y
pip install -U setuptools pip
python3 -m pip install ssdeep
```