From 1d000ae73ba99fc205a6c2596970e858ab4ce22f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Mon, 7 Apr 2014 18:07:09 +0200
Subject: [PATCH] gnu: shadow: Make source file timestamps deterministic.

* gnu/packages/admin.scm (shadow)[arguments]: Add 'reset-timestamps'
  phase.
---
 gnu/packages/admin.scm | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/admin.scm b/gnu/packages/admin.scm
index 51b40c889e5..774194d87b0 100644
--- a/gnu/packages/admin.scm
+++ b/gnu/packages/admin.scm
@@ -201,7 +201,16 @@ (define-public shadow
                       (delete-file (string-append bin "/groups"))
                       (for-each delete-file (find-files man "^groups\\."))
                       #t))
-                  %standard-phases))))
+                  (alist-cons-after
+                   'unpack 'reset-timestamps
+                   (lambda _
+                     ;; FIXME: Reset the file timestamps here, until the
+                     ;; 'unpack' phase does it for us.  See
+                     ;; <https://lists.gnu.org/archive/html/guix-devel/2014-04/msg00098.html>.
+                     (for-each (lambda (file)
+                                 (utime file 0 0 0))
+                               (find-files "." "")))
+                   %standard-phases)))))
 
     (inputs (if (string-suffix? "-linux"
                                 (or (%current-target-system)
-- 
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