NixOS/system/modules/font.nix

{ pkgs, ... }:
{
  fonts = {
    packages = with pkgs; [
      # icon fonts
      material-design-icons

      # normal fonts
      noto-fonts
      noto-fonts-cjk-sans
      noto-fonts-emoji
      noto-fonts-color-emoji

      nerdfonts

      # (nerdfonts.override {
      #   fonts = [ "FiraCode" "JetBrainsMono" "Iosevka" ];
      # })
    ];

    # use fonts specified by user rather than default ones
    enableDefaultPackages = false;

    # user defined fonts
    # the reason there's Noto Color Emoji everywhere is to override DejaVu's
    # B&W emojis that would sometimes show instead of some Color emojis
    fontconfig.defaultFonts = {
      serif = [
        "Noto Serif"
        "Noto Color Emoji"
      ];
      sansSerif = [
        "Noto Sans"
        "Noto Color Emoji"
      ];
      monospace = [
        "JetBrainsMono Nerd Font"
        "Noto Color Emoji"
      ];
      emoji = [ "Noto Color Emoji" ];
    };
  };
}