The visual editor generates a toml file below that you copy into a plan file. You clone the Iosevka repo, place the plan file there, and compile it. Full instructions are here: https://github.com/be5invis/Iosevka/blob/main/doc/custom-build.md. It takes 30-40 mins to compile Iosevka TTFs on my M1 Pro MBP though.
Here’s the page shown in the image: https://typeof.net/Iosevka/customizer.
The visual editor generates a toml file below that you copy into a plan file. You clone the Iosevka repo, place the plan file there, and compile it. Full instructions are here: https://github.com/be5invis/Iosevka/blob/main/doc/custom-build.md. It takes 30-40 mins to compile Iosevka TTFs on my M1 Pro MBP though.