Tim, Darrell,
I have also run into an avahi-tqt build failure. Again, nothing has changed on my end. However, when attempting to build avahi-tqt, it fails. I have included the context leading to the failure, because I'm not entirely sure what crashed. It looks like it is complaining about a sed option. What does it look like to you?
The source tree is currently in a state of flux while I attempt to resolve a couple of long-standing, but fundamental, bugs. I'd recommend waiting a week or so while I run through build tests and fix the resultant failures.
Tim