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According to <https://www.jetbrains.com/help/kotlin-multiplatform-dev/compose-compatibility-and-versioning.html> Compose Desktop supports ARM64 for both Linux and Windows. I have two question associated with that:
1. Can anybody confirm that this works reliably in general. Both at build and execution time?
2. Does building work with the experimental ARM GitHub runners for Linux/Windows for public repositories? See: <https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories|https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-gith[…]-repositories>
I neither have an ARM box for Linux nor for Windows, so I can’t test it myself but if that works reliably I’d try to support these additional platforms with my software as soon as these runners become available for private repositories too.

Can confirm that it works in arm64 Windows in Parallels.

1. Windows ARM64: not tested. Linux ARM64: tested on a Raspberry Pi 5 running Raspbian, works well.
2. No, GH's ARM runners for Linux are not available for private repositories yet, tested two weeks ago. May work if you're on a Pro subscription, not sure.
I compiled the build on the RPi5 itself. Also ran it on an RPi Zero 2W, but that was a very (too) slow experience.

Note: if you add the `compose.desktop.linux` and others (instead of `.currentos`) dependencies, you can generate a fat jar (uberJar) without installer that runs on all platforms. That's what I'm doing during development for faster testing.