Hello Vagrant,
This looks to me like a problem with cuirass (or cuirass settings).
The packages are marked as unsupported correctly, e.g. the arm64-generic
kenel should only support aarch64-linux (as can be seen by the warning).
However the ci server attempts to build it for all architectures.
I searched for linux-libre-arm64-generic-6.13.7 on the cuirass
interface on ci.g.g.o and there were builds for
i686-linux, x86_64_linux, powerpc64le-linux and
aarch64-linux
As the x86_64 build succeeds it then serves the substitute to someone
asking for it.
Specifying either --system=aarch64-linux or --target=aarch64-linux-gnu
gave me a substitute corresponding to a native/cross built arm64 kernel.
file $(guix build linux-libre-arm64-generic
--target=aarch64-linux-gnu)/Image
/gnu/store/*linux-libre-arm64-generic-6.13.7/Image: Linux kernel ARM64
boot executable Image, little-endian, 4K pages
