From e4f3f9ae10925a1f73352c6d79c0fa111d7de2d5 Mon Sep 17 00:00:00 2001
From: Robin Gloster <mail@glob.in>
Date: Fri, 11 Jan 2019 10:23:07 +0100
Subject: [PATCH] chez: fix build with gcc8

---
 pkgs/development/compilers/chez/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/compilers/chez/default.nix b/pkgs/development/compilers/chez/default.nix
index 9216c779143..9321c8b2de4 100644
--- a/pkgs/development/compilers/chez/default.nix
+++ b/pkgs/development/compilers/chez/default.nix
@@ -20,6 +20,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  NIX_CFLAGS_COMPILE = "-Wno-error=format-truncation";
+
   /*
   ** We patch out a very annoying 'feature' in ./configure, which
   ** tries to use 'git' to update submodules.