From cd1b1ad03b51cebf3ee36c28818642b8cc55bceb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <v@cunat.cz>
Date: Tue, 26 Oct 2021 13:29:49 +0200
Subject: [PATCH] linuxPackages.rr-zen_workaround: set meta.broken

... on kernels that are too old for the code to build.
I could have thought of this straight away.
---
 pkgs/development/tools/analysis/rr/zen_workaround.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/tools/analysis/rr/zen_workaround.nix b/pkgs/development/tools/analysis/rr/zen_workaround.nix
index d15587d2a811..a79c70821558 100644
--- a/pkgs/development/tools/analysis/rr/zen_workaround.nix
+++ b/pkgs/development/tools/analysis/rr/zen_workaround.nix
@@ -40,5 +40,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2;
     maintainers = [ maintainers.vcunat ];
     platforms = platforms.linux;
+    broken = versionOlder kernel.version "4.19"; # 4.14 breaks and 4.19 works
   };
 }