01/01: gnu: acl: Fix build failure.

[Ricardo Wurmus]

rekado pushed a commit to branch core-updates
in repository guix.

commit 4403030b7de2485dbeb6ee54c56551a2bd2b5244
Author: Ricardo Wurmus <address@hidden>
Date:   Thu Mar 15 16:41:02 2018 +0100

    gnu: acl: Fix build failure.
    
    * gnu/packages/acl.scm (acl)[arguments]: Add phase
    "ensure-no-mtimes-pre-1980".
---
 gnu/packages/acl.scm | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/gnu/packages/acl.scm b/gnu/packages/acl.scm
index 7880e53..ee17c94 100644
--- a/gnu/packages/acl.scm
+++ b/gnu/packages/acl.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2014 Mark H Weaver <address@hidden>
 ;;; Copyright © 2014 Andreas Enge <address@hidden>
 ;;; Copyright © 2017 Efraim Flashner <address@hidden>
+;;; Copyright © 2018 Ricardo Wurmus <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -47,8 +48,20 @@
     (build-system gnu-build-system)
     (arguments
      `(#:test-target "tests"
+       #:modules ((ice-9 ftw)
+                  ,@%gnu-build-system-modules)
        #:phases
        (modify-phases %standard-phases
+         ;; XXX After repacking the sources the timestamps are reset to the
+         ;; epoch, which leads to a failure in gzipping the CHANGES file.
+         (add-after 'unpack 'ensure-no-mtimes-pre-1980
+           (lambda _
+             (let ((early-1980 315619200)) ; 1980-01-02 UTC
+               (ftw "." (lambda (file stat flag)
+                          (unless (<= early-1980 (stat:mtime stat))
+                            (utime file early-1980 early-1980))
+                          #t))
+               #t)))
          (add-after 'build 'patch-exec-bin-sh
            (lambda _
              (substitute* "test/run"