[cle]

Graal has incomplete support for Java. Last time I tried a few months ago, ObjectOutputStream was not supported (I think it is now?), which was a critical part of a library I was using, forcing me to abandon Graal.

Dealing with reflection is pretty awful, you have to comb through your entire dependency graph.

Targeting the compiler for a different OS/architecture than the host is difficult, to say the least.

There are so many great languages and runtimes to pick from these days...I can't imagine why anyone would willingly choose a technology like that.

(Don't get me wrong, Graal is a fascinating technology, and I hope that one day it is able to seamlessly compile Java code to native executables...but it's not there yet.)