You're a hobbyist...yet you know what individual software all other type designers use? That is impressive ;)
Raph Levien (Inconsolata), source: https://fonts.google.com/specimen/Inconsolata/about
“Building the family
Family is built using Glyphs, fontmake and gftools post processing script. Tools are all python based.
To install all the Python tools into a virtualenv, do the following:
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
To build the fonts we must load sources/Inconsolata-vf.glyphs in Glyphs and do the following:”*