GNU bug report logs - #77033
Deploy to machine with different architecture

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From: Roman Scherer <roman.scherer <at> burningswell.com>
To: Sergey Trofimov <sarg <at> sarg.org.ru>
Cc: ludo <at> gnu.org, maxim.cournoyer <at> gmail.com, 77033 <at> debbugs.gnu.org
Subject: [bug#77033] [PATCH] deploy: Support --target and --system.
Date: Fri, 21 Mar 2025 09:20:39 +0100

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Hi Sergey,

I tried building libxcrypt on an aarch64 system with the following command:

```
guix build --system=x86_64-linux /gnu/store/0ma7qrdd5pz8421rka75mvmvhkvn1rld-libxcrypt-4.4.36.drv -v 5
The following derivation will be built:
  /gnu/store/0ma7qrdd5pz8421rka75mvmvhkvn1rld-libxcrypt-4.4.36.drv
building /gnu/store/0ma7qrdd5pz8421rka75mvmvhkvn1rld-libxcrypt-4.4.36.drv...
qemu-x86_64: QEMU internal SIGSEGV {code=MAPERR, addr=0x20}
```

Not sure, why it's crashing. I haven't found the logs for it on my
system. The log file for the derivation is empty. I see this in my
guix-daemon.log file:

```
2025-03-21 09:17:08 SIGPOLL
2025-03-21 09:17:08 unexpected build daemon error: interrupted by the user
2025-03-21 09:17:10 accepted connection from pid 27118, user roman
```

Anything else I could try?

Roman

Sergey Trofimov <sarg <at> sarg.org.ru> writes:

> Hi Roman,
>
> Roman Scherer <roman.scherer <at> burningswell.com> writes:
>
>> So, I tried building this machine on an aarch64 system with the qemu-bin
>> service running now a couple of times ...
>>
>> ```
>> (use-modules (gnu machine)
>>              (gnu machine hetzner))
>>
>> (list (machine
>>        (operating-system %hetzner-os-x86)
>>        (environment hetzner-environment-type)
>>        (configuration (hetzner-configuration
>>                        (server-type "cx42")
>>                        (ssh-key "/home/roman/workspace/guix/id_rsa")))))
>> ```
>>
>> I used this command:
>>
>> ```
>> [roman <at> m1 guix]$ ./pre-inst-env guix deploy hetzner-minimal.scm --no-offload --target=x86_64-linux-gnu --timeout=864000 --max-silent-time=864000
>> The following 1 machine will be deployed:
>>   guix-x86
>>
>> guix deploy: deploying to guix-x86...
>> guix deploy: warning: <machine-ssh-configuration> without a 'host-key' is deprecated
>> substitute: looking for substitutes on 'https://substitutes.asahi-guix.org'... 100.0%
>> substitute: looking for substitutes on 'https://substitutes.nonguix.org'... 100.0%
>> substitute: looking for substitutes on 'https://bordeaux.guix.gnu.org'... 100.0%
>> substitute: looking for substitutes on 'https://ci.guix.gnu.org'... 100.0%
>> The following derivations will be built:
>>   /gnu/store/0ma7qrdd5pz8421rka75mvmvhkvn1rld-libxcrypt-4.4.36.drv
>>   /gnu/store/8js0zmi3c2zg7ks3qnpiwsckam37vi67-guile-3.0.9.drv
>>
>> building /gnu/store/0ma7qrdd5pz8421rka75mvmvhkvn1rld-libxcrypt-4.4.36.drv...
>> ```
>>
>> And it always "hangs" there. I haven't much investigated this yet. Just
>> a small update.
>>
>
> You could try `guix build
> /gnu/store/0ma7qrdd5pz8421rka75mvmvhkvn1rld-libxcrypt-4.4.36.drv` to see
> what it does and where it hangs.
>
> Also try `--system=x86_64-linux`, it should be fast.
>
>>> I don't see a "system" field in the machine or operating system
>>> record. So I'm not sure if we have a way to infer that yet.
>>>
>>> Would it make sense to add such a field and chose the target
>>> architecture per machine?
>>>
>
> This totally makes sense to me and is the correct way. However I wonder
> if both the `system` and the `target` fields should be added, so that
> the user could choose either native or cross build. From my experience
> "native" build (as provided by qemu) is much faster. I'll try running
> a cross build tomorrow, but it is painfully slow to build the toolchain
> on my machine:
>
>
> --8<---------------cut here---------------start------------->8---
> The following 1 machine will be deployed:
>   guix-arm
>
> guix deploy: deploying to guix-arm, system=x86_64-linux, target=aarch64-linux-gnu...
> guix deploy: warning: <machine-ssh-configuration> without a 'host-key' is deprecated
> substitute: looking for substitutes on 'https://substitutes.nonguix.org'... 100.0%
> substitute: looking for substitutes on 'https://bordeaux.guix.gnu.org'... 100.0%
> substitute: looking for substitutes on 'https://ci.guix.gnu.org'... 100.0%
> The following derivations will be built:
>   /gnu/store/gxr8v1yisdiyndka0abxrc0xzrra66sv-binutils-cross-aarch64-linux-gnu-2.41.drv
>   /gnu/store/lch3711iiczn6smxsr7r3sj991p8avwv-ld-wrapper-aarch64-linux-gnu-0.drv
>   /gnu/store/zmsnlbyml0vmphfdxyxw4ps25bgrwz92-gcc-cross-sans-libc-aarch64-linux-gnu-14.2.0.drv
>   /gnu/store/57jnlmvqlvk6jkyvqcnrk4psffhmak91-linux-libre-headers-cross-aarch64-linux-gnu-5.15.49.drv
>   /gnu/store/b4f1my595ggl7d5qn46vr6qllwx7g49z-glibc-cross-aarch64-linux-gnu-2.39.drv
>   /gnu/store/sl5vfnwdarghf9ypbspq1bdlamnz3j2a-gcc-cross-aarch64-linux-gnu-14.2.0.drv
>   /gnu/store/3vp8a7mz1576xbk278k9b73nx2zqmzlw-libffi-3.4.4.drv
>   /gnu/store/y3hqwsbc8rb2g1mac8c9vsdmaacf20xm-libatomic-ops-7.6.12.drv
>   /gnu/store/bd09d178ni5sp9db62w869c6m7d3sh6v-libgc-8.2.4.drv
>   /gnu/store/cs7mzhrypgdad8v0v29arafc8brl7ynd-bash-minimal-5.1.16.drv
>   /gnu/store/np51g0ak713az6shj6sv9j3wkq4cjvjx-libunistring-1.1.drv
>   /gnu/store/rbkb4ig158h9gblbrah5nx5annvfpb4q-libxcrypt-4.4.36.drv
>   /gnu/store/lfmamfv5vx690l9n6a1ixbbk6kzw3gsr-guile-3.0.9.drv
> --8<---------------cut here---------------end--------------->8---

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