I have finally managed to get ProGuard working with CfD, with native distribution and packaging 🚀 - check out a sample setup . (Bad news is that, at first sight, optimization step does not boost performance in any way. I guess it's just more relevant to Android rather than modern JVM).

Have you considered trying R8 instead?

Yeah, I will try that later. Maybe also try to tune PG.

Does this mean you only have 1 jar shipped with your app?

No, but it's very easy to do that (but, unlike uberjar task, it won't pack non-jar files inside)