Running lwjgl.main/-main crashes nREPL

[zikajk]

Is it possible to work with Skija from Clojure nRepl?
I tried to run (-main) from your example and it crashes the Repl in Emacs (Cider) on MacOS.
Running by scripts/run.sh works fine though.

lwjgl.main> (-main)

*** Closed on Thu Nov 19 13:19:47 2020 ***

[tonsky]

Yeah, the trick with GUI apps on macOS is that all UI stuff has to be done from the first thread (create window, etc). That’s why the script passes -XstartOnFirstThread to the JVM.

The problem with Repls, I assume, is that they create their own threads for handling most operations. It is possible to start GUI app, create windows and then create thread for repl. But it’s not how the defaults are set up, I guess.

[stathissideris]

I found a similar issue rogerallen/hello_lwjgl#6 and the commit that implements a workaround that allows working with nREPL rogerallen/hello_lwjgl@a7fcace. Not sure what would be the most appropriate way to integrate it into the Clojure example, but it looks like a promising direction.