Getting font names and weights for configuration?

Help
1

I did a bunch of searches as well as reading the wiki page but couldn’t figure it out.

I have a derivation that does cp -r ${./Fonts} $out/share/fonts/truetype to install my fonts, and they show up when I do fc-list, one file being SF-Pro-Text-Medium.otf: SF Pro Text style=Medium. Under fonts.fontconfig I got sansSerif = [ "SF Pro Text" ]; to work but not "SF Pro Text Medium"

2

Use fc-list, fc-match, etc.

3

But how? I already said I checked fc-list.