From db6609bd10f9cc24ffe8d1573435a6f16551ef48 Mon Sep 17 00:00:00 2001
From: Danny Milosavljevic <dannym@scratchpost.org>
Date: Wed, 21 Mar 2018 01:34:34 +0100
Subject: [PATCH] gnu: texlive-fonts-amsfonts: Make build reproducible.

* gnu/packages/tex.scm (texlive-fonts-amsfonts)[arguments]<#:phases>[build]:
Make build reproducible.
---
 gnu/packages/tex.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gnu/packages/tex.scm b/gnu/packages/tex.scm
index 1416a00251..266e42d5aa 100644
--- a/gnu/packages/tex.scm
+++ b/gnu/packages/tex.scm
@@ -760,6 +760,8 @@ (define-public texlive-fonts-amsfonts
            (lambda* (#:key inputs #:allow-other-keys)
              (let ((mf (assoc-ref inputs "texlive-metafont-base"))
                    (cwd (getcwd)))
+               ;; Make METAFONT reproducible
+               (setenv "SOURCE_DATE_EPOCH" "1")
                ;; Tell mf where to find mf.base
                (setenv "MFBASES" (string-append mf "/share/texmf-dist/web2c"))
                ;; Tell mf where to look for source files