Currently nothing (not even the java coffee cup) appears.
I created my app using lein new reagent name
and I've tried these jvm options:
java -Xdock:name=Name
-Xdock:icon=/Users/bmaddy/Downloads/logo.jpg
-Dapple.awt.UIElement=true
-Djava.awt.headless=false
-jar name.jar
It turns out that just using Seesaw does something that makes the dock icon appear. That's good enough for what I need.
(ns name.server
(:use seesaw.core)
Other stuff I tried:
The automator method described here only gave an icon to start the app and it didn't stick around while it was running: https://discussions.apple.com/thread/4805123
There's some good ideas here, but I wasn't able to get any of them to work: https://apple.stackexchange.com/questions/191609/how-to-create-a-app-folder-from-an-executable-jar
Building an .app
package from scratch led to a bunch of LSOpenURLsWithRole() failed with error -10810
errors I wasn't able to solve, but that seems like it would be the most correct way to do it.