[bug#69899] [PATCH 0/7] support to use `guix system vm' with riscv64.

[Zheng Junjie]

Leo Famulari <leo@famulari.name> writes:

> Hi, thanks for these patches!
>
> On Tue, Mar 19, 2024 at 11:15:53PM +0800, Zheng Junjie wrote:
>> hello!. this patchset make `guix system vm --target=riscv64-linux-gnu' work.
>> and `guix system vm --system=riscv64-linux` also work, But there is a problem
>> that the qemu running with --system=riscv64-linux is also riscv architecture,
>> now you have to manually modify to use native qemu or the guix of qemu-system
>> on qemu-user is too slow. and must enable qemu-binfmt.
>
> So, what should we do about the problem? What's the ideal solution for
> Guix? I don't have any experience with this subject matter.

I've come up with two ideas:

1. Force the current system's qemu to be used, on x86_64 and -s
riscv64-linux, use x86_64's qemu.
2. add an environment variable, GUIX_QEMU, to allow the internal qemu
execution to be replaced

There may be other solutions, but I can't think of them yet.

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