From 713017b65c9d5a03dcf709bb231113d2152558e1 Mon Sep 17 00:00:00 2001
From: rain1 <address@hidden>
Date: Wed, 30 Mar 2016 13:05:19 +0100
Subject: [PATCH] * gnu/packages/linux.scm: Added setenv calls to tune the
 build towards reproducibility.

---
 gnu/packages/linux.scm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index fb2b671..34403ae 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -9,6 +9,7 @@
 ;;; Copyright © 2016 Christopher Allan Webber <address@hidden>
 ;;; Copyright © 2016 Tobias Geerinckx-Rice <address@hidden>
 ;;; Copyright © 2016 Alex Kost <address@hidden>
+;;; Copyright © 2016 Raymond Nicholson <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -223,6 +224,12 @@ for SYSTEM and optionally VARIANT, or #f if there is no such configuration."
   (let* ((version "4.5")
          (build-phase
           '(lambda* (#:key system inputs #:allow-other-keys #:rest args)
+             ;; Tuning for a reproducible build
+             (setenv "KCONFIG_NOTIMESTAMP" "1")
+             (setenv "KBUILD_BUILD_TIMESTAMP" "0")
+             (setenv "KBUILD_BUILD_USER" "guix")
+             (setenv "KBUILD_BUILD_HOST" "guix")
+             
              ;; Apply the neat patch.
              (system* "patch" "-p1" "--force"
                       "-i" (assoc-ref inputs "patch/freedo+gnu"))
-- 
2.7.3