From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tobias Geerinckx-Rice <me@tobias.gr>
Subject: Re: Build package for multiple platforms
Date: Fri, 22 Mar 2019 18:29:36 +0100
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To: mikadoZero <mikadozero@yandex.com>
Cc: Help Guix <help-guix@gnu.org>

mikadoZero,

mikadoZero wrote:
> (service qemu-binfmt-service-type
>  (qemu-binfmt-configuration
>    (platforms (lookup-qemu-platforms "arm" "aarch64" "ppc"=20
>    "mips64el"))
>    (guix-support? #t)))
>
> When I try to do a system reconfigure I get this error:
>
> error: qemu-binfmt-service-type: unbound variable
> hint: Did you forget a `use-modules' form?

qemu-binfmt-service-type is defined in (gnu services=20
virtualization).

I just use grep, but found out while researching this mail that we=20
provide a nice =E2=80=98guix system search=E2=80=99 command to find out whi=
ch=20
module provides a service

  =CE=BB guix system search qemu
  name: qemu-binfmt
  location: gnu/services/virtualization.scm:745:2
  extends: file-systems shepherd-root guix
  shepherdnames: qemu-binfmt
  description: This service supports transparent emulation of=20
  binaries compiled for other architectures using QEMU and the=20
  `binfmt_misc' functionality of the kernel Linux.
  relevance: 5

> The closest package I can find using `guix package -s` is proot=20
> but
> adding the module linux and the package proot does not solve=20
> this error
> message.

Adding packages to your system configuration won't (and can't and=20
mustn't) affect services in this way.

Kind regards,

T G-R