nix-config/fcitx5/default.nix

{
  i18n.inputMethod = {
    enabled = "fcitx5";
    # Commented out, not working
    #fcitx.engines = with pkgs.fcitx-engines; [ anthy ];
  };

  home.sessionVariables = {
    GTK_IM_MDOULE = "fcitx";
    QT_IM_MODULE = "fcitx";
    XMODIFIERS = "@im=fcitx";
    GLFW_IM_MODULE = "ibus"; # IME support in anthy
  };
}