From b60b4023d72b468ec734fba83d902a9b9f6a3625 Mon Sep 17 00:00:00 2001
From: Ivan Jager <aij+git@mrph.org>
Date: Tue, 26 Jan 2021 06:06:46 -0600
Subject: [PATCH] rr: Build with gcc9

To work around linking errors with gcc10

    src/AddressSpace.cc:1632: undefined reference to `rr_syscall_addr'

Fixes #110756
---
 pkgs/development/tools/analysis/rr/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/tools/analysis/rr/default.nix b/pkgs/development/tools/analysis/rr/default.nix
index b63713f00073..c0121d242177 100644
--- a/pkgs/development/tools/analysis/rr/default.nix
+++ b/pkgs/development/tools/analysis/rr/default.nix
@@ -1,6 +1,6 @@
-{ lib, stdenv, fetchFromGitHub, cmake, libpfm, zlib, pkg-config, python3Packages, which, procps, gdb, capnproto }:
+{ lib, gcc9Stdenv, fetchFromGitHub, cmake, libpfm, zlib, pkg-config, python3Packages, which, procps, gdb, capnproto }:
 
-stdenv.mkDerivation rec {
+gcc9Stdenv.mkDerivation rec {
   version = "5.4.0";
   pname = "rr";