Using julia v1.9beta2, I have tried to compile a system image for a project with many dependencies. This takes around 10-12 minutes with v1.8.x. With 1.9b2, I interrupted it at the 2 hour point. Perhaps I should clear out .julia/compiled? The script and project are here.
On the positive side, I have observed that, with v1.9b2, the need for a system image seems to be considerably less than it used to be, as TTFX is faster for just about everything I do.