static TpCMParamSpec *
_build_paramspecs (HazeProtocolInfo *hpi)
{
    const TpCMParamSpec account_spec =
        { "account", DBUS_TYPE_STRING_AS_STRING, G_TYPE_STRING,
        TP_CONN_MGR_PARAM_FLAG_REQUIRED, NULL, 0, NULL, NULL };
    TpCMParamSpec password_spec =
        { "password", DBUS_TYPE_STRING_AS_STRING, G_TYPE_STRING,
        TP_CONN_MGR_PARAM_FLAG_REQUIRED, NULL, 0, NULL, NULL };
    TpCMParamSpec paramspec = { NULL, NULL, 0, 0, NULL, 0, NULL, NULL };

    GArray *paramspecs = g_array_new (TRUE, TRUE, sizeof (TpCMParamSpec));
    GList *opts;

    g_array_append_val (paramspecs, account_spec);

    if (!(hpi->prpl_info->options & OPT_PROTO_NO_PASSWORD))
    {
        if (hpi->prpl_info->options & OPT_PROTO_PASSWORD_OPTIONAL)
            password_spec.flags = 0;
        g_array_append_val (paramspecs, password_spec);
    }

    for (opts = hpi->prpl_info->protocol_options; opts; opts = opts->next)
    {
        PurpleAccountOption *option = (PurpleAccountOption *)opts->data;
        /* FIXME: have a mapping from pref_name to telepathy name for options
         *        like connect_server => server on xmpp; use the tp name here
         *        and set the prpl name as setter_data.
         */
        paramspec.name = option->pref_name;
        switch (purple_account_option_get_type (option))
        {
            case PURPLE_PREF_BOOLEAN:
                paramspec.dtype = DBUS_TYPE_BOOLEAN_AS_STRING;
                paramspec.gtype = G_TYPE_BOOLEAN;
                paramspec.def = GINT_TO_POINTER (
                    purple_account_option_get_default_bool (option));
                break;
            case PURPLE_PREF_INT:
                paramspec.dtype = DBUS_TYPE_INT32_AS_STRING;
                paramspec.gtype = G_TYPE_INT;
                paramspec.def = GINT_TO_POINTER (
                    purple_account_option_get_default_int (option));
                break;
            case PURPLE_PREF_STRING:
                paramspec.dtype = DBUS_TYPE_STRING_AS_STRING;
                paramspec.gtype = G_TYPE_STRING;
                paramspec.def =
                    purple_account_option_get_default_string (option);
                break;
            default:
                g_warning ("account option %s has unknown type %u; ignoring",
                    option->pref_name, purple_account_option_get_type (option));
                continue;
        }
        g_array_append_val (paramspecs, paramspec);
    }

    return (TpCMParamSpec *) g_array_free (paramspecs, FALSE);
}


connection-manager.c: In function ‘_build_paramspecs’:
connection-manager.c:120: error: assignment of read-only member ‘gtype’
connection-manager.c:121: error: assignment of read-only member ‘def’
connection-manager.c:126: error: assignment of read-only member ‘gtype’
connection-manager.c:127: error: assignment of read-only member ‘def’
connection-manager.c:132: error: assignment of read-only member ‘gtype’
connection-manager.c:134: error: assignment of read-only member ‘def’