{
  lib,
  stdenvNoCC,
  fetchurl,
}:

let
  releaseInfo = lib.trivial.importJSON ./manifests/release.json;
  fontsInfo = lib.trivial.importJSON ./manifests/fonts.json;
  checksums = lib.trivial.importJSON ./manifests/checksums.json;

  convertAttrName =
    name:
    let
      lowerName = lib.strings.toLower name;
    in
    if builtins.match "[[:digit:]].*" lowerName != null then "_" + lowerName else lowerName;

  convertVersion =
    version: date:
    if builtins.match "[[:digit:]].*" version != null then
      version
    else
      "0-unstable-" + builtins.head (lib.strings.splitString "T" date);

  convertLicense = import ./convert-license.nix lib;

  makeNerdFont =
    {
      caskName,
      description,
      folderName,
      licenseId,
      patchedName,
      version,
      ...
    }:
    stdenvNoCC.mkDerivation {
      pname = lib.strings.toLower caskName;
      version = convertVersion version releaseInfo.published_at;

      src =
        let
          filename = folderName + ".tar.xz";
          url = "https://github.com/ryanoasis/nerd-fonts/releases/download/${releaseInfo.tag_name}/${filename}";
          sha256 = checksums.${filename};
        in
        fetchurl {
          inherit url sha256;
        };

      sourceRoot = ".";

      installPhase =
        let
          dirName = lib.strings.concatStrings (lib.strings.splitString " " patchedName);
        in
        ''
          runHook preInstall

          dst_opentype=$out/share/fonts/opentype/NerdFonts/${dirName}
          dst_truetype=$out/share/fonts/truetype/NerdFonts/${dirName}

          find -name \*.otf -exec mkdir -p $dst_opentype \; -exec cp -p {} $dst_opentype \;
          find -name \*.ttf -exec mkdir -p $dst_truetype \; -exec cp -p {} $dst_truetype \;

          runHook postInstall
        '';

      passthru.updateScript = {
        command = ./update.py;
        supportedFeatures = [ "commit" ];
      };

      meta = {
        description = "Nerd Fonts: " + description;
        license = convertLicense licenseId;
        homepage = "https://nerdfonts.com/";
        changelog = "https://github.com/ryanoasis/nerd-fonts/blob/${releaseInfo.tag_name}/changelog.md";
        platforms = lib.platforms.all;
        maintainers = with lib.maintainers; [
          doronbehar
          rc-zb
        ];
      };
    };

  nerdFonts = lib.trivial.pipe fontsInfo [
    (map (font: lib.attrsets.nameValuePair (convertAttrName font.caskName) (makeNerdFont font)))
    builtins.listToAttrs
  ];
in

nerdFonts