ivysettings.xml with credentials

In the current version it is not possible to provide credentials needed to get the ivysettings.xml. In my ant-build-file I have it working with the following declaration:

<ivy:settings id="ivysettings" url="http://myhost/svn2/config/ivysettings.xml" 
      host="myhost" realm="Subversion-OhneAd" username="config" passwd="config-pw"/>

But in IvyDE I don't have the opportunity to provide those credentials and therefore can't get the ivysettings.xml. The error is:

The ivy settings file 'http://myhost/svn2/config/ivysettings.xml' could not be read: The HTTP response code for http://myhost/svn2/config/ivysettings.xml did not indicate a success. See log for more detail.

So we need a way to provide credentials for getting the ivysettings.xml within IvyDE.