From c875aecdbe695cd09b1bda54803852f704307baa Mon Sep 17 00:00:00 2001
From: Orivej Desh <orivej@gmx.fr>
Date: Wed, 6 Dec 2017 05:43:38 +0000
Subject: [PATCH] altcoins.primecoin: disable parallel building

---
 pkgs/applications/altcoins/primecoin.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/applications/altcoins/primecoin.nix b/pkgs/applications/altcoins/primecoin.nix
index b1e3dc2dd93d..f79d54d0ce26 100644
--- a/pkgs/applications/altcoins/primecoin.nix
+++ b/pkgs/applications/altcoins/primecoin.nix
@@ -31,6 +31,10 @@ stdenv.mkDerivation rec{
     then "install -D bitcoin-qt $out/bin/primecoin-qt"
     else "install -D bitcoind $out/bin/primecoind";
 
+  # `make build/version.o`:
+  # make: *** No rule to make target 'build/build.h', needed by 'build/version.o'.  Stop.
+  enableParallelBuilding = false;
+
   meta = {
     description = "A new type cryptocurrency which is proof-of-work based on searching for prime numbers";
     longDescription= ''