PackageCompiler.jl is more fully featured, and I'm definitely looking forward to further developments :) But it still has some pain points:

* Massive executables (which you mentioned). This makes it very difficult to use with embedded systems.

* Functions are not precompiled by default. You need to write a precompile script [1], which leads to a "two script problem": one script to do what you actually want, and another script that (hopefully) hits all the types you'll possibly need at runtime. And yes you can use `--trace-compile=file.jl` or SnoopCompile.jl instead, but this is still another step I need to worry about when compiling something.

[1]: https://julialang.github.io/PackageCompiler.jl/dev/sysimages...