bug#30097: [core-updates] nspr 4.17 not reproducible

[Marius Bakke <mbakke@fastmail.com>]

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Gábor Boskovits <boskovits@gmail.com> writes:

> nspr 4.17 is not reproducible.
> Diffoscope output attached.

Thanks for the report!

The attached patch should solve it.  Since there are quite a few
dependent packages, I'd like to push this to a new 'staging' branch that
will be started shortly after the core-updates merge.  WDYT?


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From 9181529d3f2b5c88a3985cbc32ed46e22262858d Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@fastmail.com>
Date: Sat, 13 Jan 2018 18:15:17 +0100
Subject: [PATCH] gnu: nspr: Build reproducibly.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Fixes <https://bugs.gnu.org/30097>.
Reported by Gábor Boskovits <boskovits@gmail.com>.

* gnu/packages/gnuzilla.scm (nspr)[arguments]: Add #:make-flags to prevent
indeterministic timestamps from being recorded.
---
 gnu/packages/gnuzilla.scm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gnu/packages/gnuzilla.scm b/gnu/packages/gnuzilla.scm
index 61f20a4fd..6ee3133b4 100644
--- a/gnu/packages/gnuzilla.scm
+++ b/gnu/packages/gnuzilla.scm
@@ -268,6 +268,10 @@ in C/C++.")
                                (string-append "LDFLAGS=-Wl,-rpath="
                                               (assoc-ref %outputs "out")
                                               "/lib"))
+       ;; Use fixed timestamps for reproducibility.
+       #:make-flags '("SH_DATE='1970-01-01 00:00:01'"
+                      ;; This is epoch 1 in microseconds.
+                      "SH_NOW=100000")
        #:phases (modify-phases %standard-phases
                   (add-before 'configure 'chdir
                     (lambda _ (chdir "nspr") #t)))))
-- 
2.15.1


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