l...@gnu.org (Ludovic Courtès) writes:
> Alex Kost <alez...@gmail.com> skribis:
>
>> Hello, I have Guix installed on a 32-bit "ArchLinux", and I use the
>> following command to “deploy” a 64-bit GuixSD:
>>
>> $ guix system init --no-grub --system=x86_64-linux my-os-config.scm /mnt/guix
>>
>> However, eventually it fails with the following output:
>>
>> ...
>> downloading `/gnu/store/qf803k3npvn8632vssc4g3zp0s5klghv-modprobe'
>> from
>> `http://hydra.gnu.org/nar/qf803k3npvn8632vssc4g3zp0s5klghv-modprobe'
>> (0.0 MiB installed)...
>> http://hydra.gnu.org/nar/qf803k3npvn8632vssc4g3zp0s5klghv-modprobe 0.5
>> KiB transferredkilling process 18626
>> guix system: error: build failed: a `x86_64-linux' is required to build
>> `/gnu/store/zckxg5v0pdxb22kyl6jrzawj1wwrfjby-locale.drv', but I am a
>> `i686-linux'
>
> It works as long as there are substitutes available, but some
> derivations are not substitutable, as you noticed, and since an i686
> host cannot run x86_64 code, you get this error.
>
>> So I'm wondering is there a way to init a 64-bit system from a 32-bit
>> one or perhaps it's just not possible?
>
> It actually is possible, but a little bit trickier. Mark did it a few
> weeks ago, though in a slightly different context. The following should
> work:
>
> 1. Install an i686 GuixSD, simply with ‘guix system init’, but use an
> x86_64 kernel. To do that, you need to explicitly ask for an
> x86_64 kernel and Guix (so that the daemon accepts to build x86_64
> things) in the OS config:
>
> (define linux-libre-x86_64
> (package (inherit linux-libre)
> (arguments `(#:system "x86_64-linux"
> ,@(package-arguments linux-libre)))))
I think this is not sufficient, because it would still use the kernel
config for i686. Here's what I used for the kernel:
>From 1f6f6c9cfecfc5bf72bdfc97caf7247090c0e1f3 Mon Sep 17 00:00:00 2001
From: Mark H Weaver <m...@netris.org>
Date: Mon, 20 Apr 2015 23:51:45 -0400
Subject: [PATCH] LOCAL_ONLY: gnu: Add linux-libre-64.
---
gnu/packages/linux.scm | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index 26e9aa9..c42919d 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -64,6 +64,7 @@
#:use-module (guix build-system cmake)
#:use-module (guix build-system python)
#:use-module (guix build-system trivial)
+ #:use-module ((guix build utils) #:select (alist-replace))
#:use-module (srfi srfi-26)
#:use-module (ice-9 match))
@@ -308,6 +309,15 @@ It has been modified to remove all non-free binary blobs.")
(license gpl2)
(home-page "http://www.gnu.org/software/linux-libre/";))))
+(define linux-libre-64
+ (package (inherit linux-libre)
+ (arguments
+ `(#:system "x86_64-linux"
+ ,@(package-arguments linux-libre)))
+ (native-inputs
+ (alist-replace "kconfig" (list (kernel-config "x86_64-linux"))
+ (package-native-inputs linux-libre)))))
+
;;;
;;; Pluggable authentication modules (PAM).
--
2.2.1
Mark
