From a741a1d9f2e1dd7fedf6d602f22da38e82d9b4e6 Mon Sep 17 00:00:00 2001
From: Christopher Baines <christopher.baines@digital.cabinet-office.gov.uk>
Date: Sun, 1 Jul 2018 18:53:38 +0100
Subject: Work around a issue in grootfs when unpacking tar archives

---
 guix/docker.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/guix/docker.scm b/guix/docker.scm
index 97ac6d982b..61a98b28a5 100644
--- a/guix/docker.scm
+++ b/guix/docker.scm
@@ -229,9 +229,11 @@ SRFI-19 time-utc object, as the creation time in metadata."
             ;; Initialize /var/guix, assuming PREFIX points to a profile.
             (install-database-and-gc-roots "." database prefix))
 
+          (mkdir-p "gnu/store")
           (apply invoke "tar" "-cf" "../layer.tar"
                  `(,@transformation-options
                    ,@%tar-determinism-options
+                   "gnu"
                    ,@paths
                    ,@(scandir "."
                               (lambda (file)
-- 
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