From d8218de5c53c5b1984d27f37182ced01a88808b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <v@cunat.cz>
Date: Wed, 9 Oct 2019 08:41:19 +0200
Subject: [PATCH] go: apply upstream patch

This should fix the tests almost always failing on Hydra for i686.
---
 pkgs/development/compilers/go/1.12.nix | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/go/1.12.nix b/pkgs/development/compilers/go/1.12.nix
index 817f3ab324d..7a6c0b041fc 100644
--- a/pkgs/development/compilers/go/1.12.nix
+++ b/pkgs/development/compilers/go/1.12.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, tzdata, iana-etc, runCommand
+{ stdenv, fetchurl, fetchpatch, tzdata, iana-etc, runCommand
 , perl, which, pkgconfig, patch, procps, pcre, cacert, Security, Foundation
 , mailcap, runtimeShell
 , buildPackages, pkgsTargetTarget
@@ -137,6 +137,11 @@ stdenv.mkDerivation rec {
     ./skip-nohup-tests.patch
     # breaks under load: https://github.com/golang/go/issues/25628
     ./skip-test-extra-files-on-386.patch
+    (fetchpatch { # probably included in >= 1.12.10
+      url = "https://github.com/golang/go/commit/aae0b5b0b.diff";
+      name = "TestGcSys-too-much-memory.diff";
+      sha256 = "1bl9d2pl6n99n9g65cq91sygmp1iva5rmrxbprwn4xd0ql36psa8";
+    })
   ];
 
   postPatch = ''