From 3009f1882839a5c967e5c18b8b84c3c5407b29a9 Mon Sep 17 00:00:00 2001
From: Yuxuan Shui <yshuiv7@gmail.com>
Date: Sat, 13 Jun 2026 11:30:30 +0100
Subject: [PATCH] rr: only enable 32-bit support on x86_64

i686 libraries cannot be built on ARM systems, but are required to
enable 32-bit support.

Supersedes #531138
---
 pkgs/development/tools/analysis/rr/default.nix | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/tools/analysis/rr/default.nix b/pkgs/development/tools/analysis/rr/default.nix
index 2aabf266e193..4a86304b1986 100644
--- a/pkgs/development/tools/analysis/rr/default.nix
+++ b/pkgs/development/tools/analysis/rr/default.nix
@@ -1,6 +1,7 @@
 {
   lib,
   gccMultiStdenv,
+  stdenv,
   fetchFromGitHub,
   fetchpatch,
   bash,
@@ -17,8 +18,10 @@
   zlib,
   zstd,
 }:
-
-gccMultiStdenv.mkDerivation (finalAttrs: {
+let
+  stdenv' = if stdenv.hostPlatform.isx86_64 then gccMultiStdenv else stdenv;
+in
+stdenv'.mkDerivation (finalAttrs: {
   version = "5.9.0";
   pname = "rr";
 
@@ -77,7 +80,7 @@ gccMultiStdenv.mkDerivation (finalAttrs: {
   ];
 
   cmakeFlags = [
-    (lib.cmakeBool "disable32bit" false)
+    (lib.cmakeBool "disable32bit" (!stdenv.hostPlatform.isx86_64))
     (lib.cmakeBool "BUILD_TESTS" finalAttrs.finalPackage.doCheck)
   ];