hi, I'm thinking about using compose for my next project and have a question: Is it possible to create windows binaries on my linux machine?

No as it's using jpackage under the hood which in turn requires wix build tools to build for windows. See here

thanks for the answer

Is there any build system / toolchain / cross platform something that allows building binaries for other platforms?

Kotlin/Native can build for windows from linux host 😄

s there any build system / toolchain / cross platform something that allows building binaries for other platforms?

golang, does this amazingly well (it’s easy because it doesn’t depends on libc). If you are not using cgo, you can cross compile to any of the supported target from any machine.

GraalVM

@tad graal doesn’t do cross compilation