Hi all,
Not sure why this was needed, but running:
$ sudo herd restart file-system-/proc/sys/fs/binfmt_misc
...solved the problem for me. I assume a reboot would have as well. I'm not
sure why this was needed -- seems like it shouldn't be -- but at least builds
are building for me now.
-- Ian
On Sun, Jan 5, 2025, at 6:03 PM, Ian Eure wrote:
> In "(guix) Additional Build Options", documenting the --system
> option,
> the Guix manual says:
>
> Similarly, when transparent emulation with QEMU and
> ‘binfmt_misc’
> is enabled (*note ‘qemu-binfmt-service-type’: Virtualization
> Services.), you can build for any system for which a QEMU
> ‘binfmt_misc’ handler is installed.
>
> So, I added this -- the exact configuration from "(guix)
> Virtualization Services" in the manual -- to my operating-system’s
> services:
>
> (service qemu-binfmt-service-type
> (qemu-binfmt-configuration
> (platforms (lookup-qemu-platforms "arm"
> "aarch64"))))
>
> And `guix system reconfigure'd. The service is running:
>
> # herd status qemu-binfmt
> Status of qemu-binfmt:
> It is running since Mon Dec 30 20:47:07 2024 (6 days ago).
> Running value is #t.
> It is enabled.
> Provides: qemu-binfmt
> Requires: file-system-/proc/sys/fs/binfmt_misc
> Will be respawned.
>
> If I try to build a package with --system specified, it fails due
> to the wrong architecture:
>
> $ guix build --system=aarch64-linux guix
> The following derivation will be built:
>
> /gnu/store/6wwbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv
> building
>
> /gnu/store/6wwbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv...
> @ unsupported-platform
>
> /gnu/store/6wwbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv
> aarch64-linux
> while setting up the build environment: a `aarch64-linux' is
> required to build
>
> `/gnu/store/6wwbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv',
> but I am a `x86_64-linux'
> builder for
>
> `/gnu/store/6wwbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv'
> failed with exit code 1
> build of
>
> /gnu/store/6wwbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv
> failed
> View build log at
>
> '/var/log/guix/drvs/6w/wbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv.gz'.
> guix build: error: build of
>
> `/gnu/store/6wwbzsry0c3sm5s0aifgj4sfzahmkk30-guix-1.4.0-31.121e96d.drv'
> failed
>
> The "(guix) Native Builds" part of the manual mentions that this
> error will occur "If the ‘binfmt_misc’ mechanism is not setup
> correctly..."
>
> What is the correct way to set Guix up so I can build
> aarch64-linux packages on x86_64-linux?
>
> Thanks,
>
> -- Ian
