I'm trying to think of a vaguely plausible use for an EULA with free software ...
Suppose you want to force people to publish the source when they use the software to drive a publicly accessible web server. This condition would still be DFSG-free, I think, but you can't enforce it with a pure copyright licence like the GPL because using the software in a web server is not an activity that requires permission from the copyright holder. So you might put that condition in an EULA and only give the software to people who agree to the EULA. In addition, you use a copyright licence that allows distribution only when the distributor makes the recipient agree to the EULA. This way you recursively enforce a condition on use of the software, and the software is DFSG-free, and the whole thing is possible using standard copyright and contract law. Maybe. There are some details to be worked out here, and I'm not sure whether you could make it possible for anyone (not just a copyright holder) to sue someone who uses the software in a web server without distributing the source. Edmund
