From b1593c1c4fd8f4fc6df4c43cab51334426e3aa76 Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@fastmail.com>
Date: Sun, 16 Jun 2019 09:39:00 +0200
Subject: [PATCH] gnu: bison: Disable parallel build.

Fixes <https://bugs.gnu.org/36238.
Reported by Carl Dong <contact@carldong.me>.

* gnu/packages/bison.scm (bison)[arguments]: New field.
---
 gnu/packages/bison.scm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gnu/packages/bison.scm b/gnu/packages/bison.scm
index 5f50ebf6b8..2d7383ce98 100644
--- a/gnu/packages/bison.scm
+++ b/gnu/packages/bison.scm
@@ -41,6 +41,11 @@
        (base32
         "03c2pmq3bs0drdislnz6gm1rwz3n4pb2rz9navyxydppxg2rl597"))))
     (build-system gnu-build-system)
+    (arguments
+     '(;; Building in parallel on many-core systems may cause an error such as
+       ;; "mv: cannot stat 'examples/c/reccalc/scan.stamp.tmp': No such file or
+       ;; directory".  See <https://bugs.gnu.org/36238>.
+       #:parallel-build? #f))
     (native-inputs `(("perl" ,perl)
                      ;; m4 is not present in PATH when cross-building.
                      ("m4" ,m4)))