From d4f5ea502d2c8358c2cf5fffd96cba0ac233984f Mon Sep 17 00:00:00 2001
From: Stefan <stefan-guix@vodafonemail.de>
Date: Thu, 7 Jan 2021 21:44:22 +0100
Subject: [PATCH] services: qemu-binfmt: 'guix-support?' defaults to #t.
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* gnu/services/virtualization.scm (qemu-binfmt-service-type)[guix-support?]:
Change the default from #f to #t.
* doc/guix.texi (Transparent Emulation with QEMU): Change the default of
‘guix-support?’ from #f to #t. Describe the implication of setting it to #f.
Co-authored-by: Ludovic Courtès <ludo@gnu.org>
---
doc/guix.texi | 6 +++++-
gnu/services/virtualization.scm | 2 +-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/doc/guix.texi b/doc/guix.texi
index cea7f8a8cfc..1234834945b 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -27338,7 +27338,7 @@ This is the configuration for the @code{qemu-binfmt} service.
The list of emulated QEMU platforms. Each item must be a @dfn{platform
object} as returned by @code{lookup-qemu-platforms} (see below).
-@item @code{guix-support?} (default: @code{#f})
+@item @code{guix-support?} (default: @code{#t})
When it is true, QEMU and all its dependencies are added to the build
environment of @command{guix-daemon} (@pxref{Invoking guix-daemon,
@option{--chroot-directory} option}). This allows the @code{binfmt_misc}
@@ -27367,6 +27367,10 @@ build}, transparently using QEMU to emulate the ARMv7 CPU. Pretty handy
if you'd like to test a package build for an architecture you don't have
access to!
+When @code{guix-support?} is set to @code{#f}, programs for other
+architectures can still be executed transparently, but invoking commands
+like @command{guix build -s armhf-linux @dots{}} will fail.
+
@item @code{qemu} (default: @code{qemu})
The QEMU package to use.
@end table
diff --git a/gnu/services/virtualization.scm b/gnu/services/virtualization.scm
index f8d413d18ea..a45da14a809 100644
--- a/gnu/services/virtualization.scm
+++ b/gnu/services/virtualization.scm
@@ -717,7 +717,7 @@ (define-record-type* <qemu-binfmt-configuration>
(platforms qemu-binfmt-configuration-platforms
(default '())) ;safest default
(guix-support? qemu-binfmt-configuration-guix-support?
- (default #f)))
+ (default #t)))
(define (qemu-platform->binfmt qemu platform)
"Return a gexp that evaluates to a binfmt string for PLATFORM, using the
--
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