Installing dependencies does not work on Gentoo

[apraga]

Hi,

Package manager is incorrectly detected as apt on Gentoo, instead of emerge:

❯ install-nplinker-deps
✅ NPLinker dependencies and databases will be installed in: /home/alex/code/nplinker/venv/nplinker_lib
⏳ Installation will take about 5 minutes

✅ Package manager is 'apt'

To use 'apt' command, you need to allow 'sudo apt' by providing your computer password

Steps to reproduce (from source code)

pip install git+https://github.com/nplinker/nplinker@dev
cd code/nplinker/
python -m venv venv
 ./venv/bin/activate.fish
pip install .
install-nplinker-deps

Thanks