{
  fonts.fontconfig.defaultFonts = {
    monospace = [ "Fira Code" "Source Code Pro For Powerline" "Roboto Mono" "DejaVu Sans Mono" ];
    sansSerif = [ "Roboto Regular" "DejaVu Sans" ];
    serif = [ "Roboto Slab Regular" "DejaVu Serif" ];
  };
}