From 131a97e8c8790621fde729335339668463a4604f Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Wed, 22 Jun 2022 23:08:05 +0100
Subject: [PATCH] gnu-efi: pull fix pending upstream inclusion for parallel
 build failures

Without the change parallel build fails as:

    gcc -I/build/gnu-efi-code//lib ... -c lib/runtime/rtstr.c -o runtime/rtstr.o
    Assembler messages:
    Fatal error: can't create runtime/rtstr.o: No such file or directory
---
 pkgs/development/libraries/gnu-efi/default.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkgs/development/libraries/gnu-efi/default.nix b/pkgs/development/libraries/gnu-efi/default.nix
index f331a8f753b..a49e0fad215 100644
--- a/pkgs/development/libraries/gnu-efi/default.nix
+++ b/pkgs/development/libraries/gnu-efi/default.nix
@@ -12,6 +12,16 @@ stdenv.mkDerivation rec {
     sha256 = "tztkOg1Wl9HzltdDFEjoht2AVmh4lXjj4aKCd8lShDU=";
   };
 
+  patches = [
+    # Pull fix pending upstream inclusion for parallel builds
+    #  https://sourceforge.net/p/gnu-efi/patches/84/
+    (fetchurl {
+      name = "parallel-build.patch";
+      url = "https://sourceforge.net/p/gnu-efi/patches/84/attachment/0001-lib-Makefile-add-.o-file-dependency-on-libsubdirs-ta.patch";
+      sha256 = "sha256-+2UwV2lopdB/tazib1BLzO1E3GgB1L8dZsSQKWVoLwA=";
+    })
+  ];
+
   buildInputs = [ pciutils ];
 
   hardeningDisable = [ "stackprotector" ];