From 64720891ae7edc33f963651c5ba2509513b1849a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Wed, 15 Jul 2015 16:16:43 +0200
Subject: [PATCH] system: Make /dev/kvm 660.

* gnu/services/base.scm (kvm-udev-rule): Change /dev/kvm mode to 0660 as a
  followup to the resolution of <http://bugs.gnu.org/18994>.
---
 gnu/services/base.scm | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index d5744204d9..e9e69ea2b8 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -739,11 +739,11 @@ item of @var{packages}."
                         (call-with-output-file
                             (string-append rules.d "/90-kvm.rules")
                           (lambda (port)
-                            ;; FIXME: As a workaround for
-                            ;; <http://bugs.gnu.org/18994>, make /dev/kvm 666
-                            ;; instead of 660.
+                            ;; Build users are part of the "kvm" group, so we
+                            ;; can fearlessly make /dev/kvm 660 (see
+                            ;; <http://bugs.gnu.org/18994>, for background.)
                             (display "\
-KERNEL==\"kvm\", GROUP=\"kvm\", MODE=\"0666\"\n" port))))
+KERNEL==\"kvm\", GROUP=\"kvm\", MODE=\"0660\"\n" port))))
                     #:modules '((guix build utils))))
 
 (define* (udev-service #:key (udev eudev) (rules '()))