From ff7f75dfccec524e33f472e27fad2ca8742d873b Mon Sep 17 00:00:00 2001
From: Aaron Jheng <wentworth@outlook.com>
Date: Mon, 14 Nov 2022 04:30:27 +0000
Subject: [PATCH] perf-linux: fix build on linux 5.4

---
 pkgs/os-specific/linux/kernel/perf/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/os-specific/linux/kernel/perf/default.nix b/pkgs/os-specific/linux/kernel/perf/default.nix
index e3a387b8115b..2006c7b0bcdb 100644
--- a/pkgs/os-specific/linux/kernel/perf/default.nix
+++ b/pkgs/os-specific/linux/kernel/perf/default.nix
@@ -69,7 +69,7 @@ stdenv.mkDerivation {
 
   postPatch = ''
     patchShebangs scripts tools/perf/pmu-events/jevents.py
-
+  '' + lib.optionalString (lib.versionAtLeast kernel.version "5.8") ''
     substituteInPlace tools/perf/scripts/python/flamegraph.py \
       --replace "/usr/share/d3-flame-graph/d3-flamegraph-base.html" \
       "${d3-flame-graph-templates}/share/d3-flame-graph/d3-flamegraph-base.html"