Action fails on win-11-arm

[hohwille]

Thanks for making this reusable GHA that I am using in my OSS project IDEasy! 👍

I recently added a build for win-11-arm image on GitHub in my project.
This fails with the following error:

Run graalvm/setup-graalvm@v1
Error: Failed to download graalvm-community-jdk-25.0.1_windows-aarch64_bin.zip. Are you sure java-version: '25.0.1' is correct?

See https://github.com/devonfw/IDEasy/actions/runs/20812437104/job/59779708855

Surely there would be no error if GraalVM would provide support for Windows@ARM64 but this is currently not the case:
oracle/graal#9215

Would it make sense to fallback to x86_64 if the ARM64 download fails (at least for windows)?

setup-graalvm/src/liberica.ts

Lines 14 to 15 in 54b4f5a

	const toolName = determineToolName(javaVersion, javaPackage)
	return downloadExtractAndCacheJDK(async () => downloadFile(downloadUrl), toolName, javaVersion)

setup-graalvm/src/liberica.ts

Line 80 in 54b4f5a

return `${c.JDK_PLATFORM}-${c.GRAALVM_ARCH}`

[fniephaus]

Thanks for the request, @hohwille.

I'm aware that you should be able to run x64 binaries on Windows ARM but can you confirm this actually works for GraalVM Native Image? As explained in oracle/graal#9215 (comment), the binaries produced would again target x64, which should then also run emulated on ARM.

Since this approach is comparable with building binaries on x64 and then using them on ARM, I'm not sure it makes sense to silently fall back to x64 binaries in GHA using win-11-arm images. Instead, it may be better we improve the error message and make it clear that GraalVM does not run on Windows ARM yet, and that one could fall back to building images on x64 which can then run emulated.

[hohwille]

Thanks for the feedback @fniephaus
I opened this ticket before I got the feedback because the workaround was suggested like this but the confirmation that this is of no use was confirmed after I opened this issue.
Still the could be the question if it is better to download graalvm than immediately failing and you could think if you want to add an option for that. But I agree that this seems not like a happy path thing so also feel free to just close this issue.