I've managed to successfully create a cljfx application, and a Windows .exe installer using jpackage. Thanks to @vlaaad, and all the others that contribute to and around cljfx.

I'm trying to add a splash screen using jpackage, and I've done so. The problem is that the splash screen remains visible even when the cljfx stage component renders. Any thoughts on how to make the splash screen invisible?

There's a Java class called SplashScreen. What works for me is:

(when-let [splash-screen (SplashScreen/getSplashScreen)]
    (.close splash-screen))