https://github.com/babashka/babashka/wiki/Self-contained-executable has a couple of ways

just to be clear, note that these aren't not OS-agnostic, e.g. shipping a mac binary and codebase to a windows machine won't work

With the uberjar approach you can build binaries for any OS on any OS though

Great thanks! That’s the page I was looking for.

cat ./bb uber.jar > my-binary

magic ™️

it works by virtue of two things: 1. executables can have arbitrary blobs attached to them 2. zip files can have arbitrary blobs in front of them

I need that magic to "compile" ys... Do you have a link to the place in your code that unpacks this and makes it work?

bb doesn't unpack anything. the logic is: 1. if the invoked executable doesn't have the name bb 2. it checks if the invoked executable is a valid zip file 3. if so, then bb treats the invoked executable as an uberjar, as if you would have written: bb uberjar.jar

I see.

Where did you learn that trick?

I'm surprised that executables can have arbitrary blobs attached to them works on all OSes

somebody I had lunch with told me

well nice work putting it to good use in bb!

> With the uberjar approach you can build binaries for any OS on any OS though I assume you mean any OS that can run bb which is just the ones with graalvm support, right?

any OS that bb was compiled for, obviously

so yes