{ ... }:
{
  home.file."thunderbird-gnome-theme" = {
    target = ".thunderbird/default/chrome/thunderbird-gnome-theme";
    source = fetchTarball {
      url = "https://github.com/rafaelmardojai/thunderbird-gnome-thee/archive/v115.tar.gz";
      sha256 = "1l295w61h5469328qkjggny3mjq1x0q3zr9p8pz5sq5pypc7604x";
    };
  };

  programs.thunderbird = {
    enable = true;
    profiles.default = {
      isDefault = true;
      settings = {
        "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
        "svg.context-properties.content.enabled" = true;
        "gnomeTheme.hideTabbar" = true;
      };
      userChrome = ''
        @import "thunderbird-gnome-theme/userChrome.css";
        @import "thunderbird-gnome-theme/theme/colors/dark.css";
      '';
    };
  };

  xdg.desktopEntries.thunderbird = {
    categories = [
      "Network"
      "Chat"
      "Email"
      "Feed"
      "GTK"
      "News"
    ];
    comment = "Read and write e-mails or RSS feeds, or manage tasks on calendars.";
    exec = "thunderbird --name thunderbird %U";
    genericName = "Email Client";
    icon = ./icon.svg;
    mimeType = [
      "message/rfc822"
      "x-scheme-handler/mailto"
      "text/calendar"
      "text/x-vcard"
    ];
    name = "Email";
    startupNotify = true;
    terminal = false;
    type = "Application";
  };
}