Re: Qemu binfmt on foreign distro

[Mathieu Othacehe]

Hello Ludo,

> How did you get ENOENT?  Was it because you had installed qemu/binfmt
> support from the host distro, and thus /usr/bin/qemu-whatever wasn’t
> found?

Yes that's it.

mathieu@cervin:~$ ls /proc/sys/fs/binfmt_misc/ -al
total 0
-rw-r--r-- 1 root root 0 nov.  23 19:27 qemu-aarch64
-rw-r--r-- 1 root root 0 nov.  23 19:27 qemu-arm
...

>
> How does it fail exactly, and what do you have in
> /proc/sys/fs/binfmt_misc?
>
> On Guix System, I get the expected behavior:
>
> --8<---------------cut here---------------start------------->8---
> $ sudo herd stop qemu-binfmt
> Service qemu-binfmt has been stopped.
> $ guix build -s aarch64-linux hello --check
> La jena derivo estos konstruata:
>    /gnu/store/3j4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv
> building /gnu/store/3j4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv...
> @ unsupported-platform 
> /gnu/store/3j4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv aarch64-linux
> while setting up the build environment: a `aarch64-linux' is required to 
> build `/gnu/store/3j4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv', but I am 
> a `x86_64-linux'
> builder for `/gnu/store/3j4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv' 
> failed with exit code 1
> build of /gnu/store/3j4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv failed
> View build log at 
> '/var/log/guix/drvs/3j/4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv.bz2'.
> guix build: error: build of 
> `/gnu/store/3j4nj1y86szk6ibaqp4yc09m2p1xmkr5-hello-2.10.drv' failed
> --8<---------------cut here---------------end--------------->8---
>
> Thanks,
> Ludo’.