{ config, lib, pkgs, ... }: {
  config.assets."style.css".path = ./style.css;
  config.assets."fonts.css".path = with lib; builtins.toFile "fonts.css" (join "\n" (map
    (font: ''
      @font-face {
        font-family: '${font.name}';
        font-style: normal;
        font-weight: ${toString font.weight};
        src: url(/${head config.assets.${font.file}.locations}) format('woff2');
      }
    '')
    (
      (crossLists (name: file: weight: { inherit name file weight; })
        [ [ "Signika " ] [ "signika-extended.woff2" "signika.woff2" ] [ 500 700 ] ]
      )
      ++
      (crossLists (name: file: weight: { inherit name file weight; })
        [ [ "Heebo " ] [ "heebo-extended.woff2" "heebo.woff2" ] [ 400 600 ] ]
      )
    )
  ));

  # TODO: get directly from https://github.com/google/fonts
  #       and compress with https://github.com/fonttools/fonttools
  config.assets."signika-extended.woff2" = {
    path = pkgs.fetchurl {
      url = "https://fonts.gstatic.com/s/signika/v25/vEFO2_JTCgwQ5ejvMV0Ox_Kg1UwJ0tKfX6bOjM7sfA.woff2";
      hash = "sha256-6xM7cHYlTKNf1b0gpqhPJjwOoZfxx9+u1e4JPYG2lKk=";
      name = "signika-extended.woff2";
    };
  };
  config.assets."signika.woff2" = {
    path = pkgs.fetchurl {
      url = "https://fonts.gstatic.com/s/signika/v25/vEFO2_JTCgwQ5ejvMV0Ox_Kg1UwJ0tKfX6bBjM4.woff2";
      hash = "sha256-Yu0kGT3seb8Qtulu84wvY6nLyPXsRBO/JvTD2BQBtHg=";
      name = "signika.woff2";
    };
  };
  config.assets."heebo-extended.woff2" = {
    path = pkgs.fetchurl {
      url = "https://fonts.gstatic.com/s/heebo/v26/NGS6v5_NC0k9P9H2TbE.woff2";
      hash = "sha256-lk3+fFEqYWbHHGyXkdhKnOOMGS9m5ZbbxQcRQCSlxDE=";
      name = "heebo-extended.woff2";
    };
  };
  config.assets."heebo.woff2" = {
    path = pkgs.fetchurl {
      url = "https://fonts.gstatic.com/s/heebo/v26/NGS6v5_NC0k9P9H4TbFzsQ.woff2";
      hash = "sha256-JWnjYlbcNsg6KCJnRRjECL2HnZGJOBTMtdutWBNza4Q=";
      name = "heebo.woff2";
    };
  };
}