From 07aba57bca44794f59ec60757c1d74793c6281c6 Mon Sep 17 00:00:00 2001
From: Ashish SHUKLA <ashish.is@lostca.se>
Date: Thu, 12 May 2022 14:50:03 +0530
Subject: [PATCH] zbackup: Fix build error

Upstream bug report: https://github.com/zbackup/zbackup/issues/160
---
 pkgs/tools/backup/zbackup/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/tools/backup/zbackup/default.nix b/pkgs/tools/backup/zbackup/default.nix
index ee5cc6fd89e..9b618ccec50 100644
--- a/pkgs/tools/backup/zbackup/default.nix
+++ b/pkgs/tools/backup/zbackup/default.nix
@@ -20,6 +20,10 @@ stdenv.mkDerivation rec {
     ./protobuf-api-change.patch
   ];
 
+  # zbackup uses dynamic exception specifications which are not
+  # allowed in C++17
+  NIX_CFLAGS_COMPILE = [ "--std=c++14" ];
+
   buildInputs = [ zlib openssl protobuf lzo libunwind ];
   nativeBuildInputs = [ cmake protobufc ];