From d42856670d043b80d9e776ab78c5f393ca103d54 Mon Sep 17 00:00:00 2001
From: Ricardo Wurmus <rekado@elephly.net>
Date: Wed, 9 Nov 2022 10:33:45 +0100
Subject: [PATCH] gnu: bart: Do not build in parallel.

This is necessary for a reproducible build.

* gnu/packages/image-processing.scm (bart)[arguments]: Add PARALLEL and
PARALLEL_NJOBS to make flags; disable parallel build.
---
 gnu/packages/image-processing.scm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gnu/packages/image-processing.scm b/gnu/packages/image-processing.scm
index cae9c55a73..9bf743bf45 100644
--- a/gnu/packages/image-processing.scm
+++ b/gnu/packages/image-processing.scm
@@ -117,10 +117,13 @@
       #:test-target "utest"
       #:make-flags #~(list
                       (string-append "PREFIX=" #$output)
+                      "PARALLEL=1"
+                      "PARALLEL_NJOBS=1"
                       "OPENBLAS=1"
                       "SCALAPACK=1"
                       (string-append "BLAS_BASE=" #$(this-package-input "openblas"))
                       (string-append "FFTW_BASE=" #$(this-package-input "fftw")))
+      #:parallel-build? #false ;leads to non-deterministic output
       #:phases
       #~(modify-phases %standard-phases
           (delete 'configure)