From 2a699029f43a2d467b07fc42bea8fd975ffa766f Mon Sep 17 00:00:00 2001
From: misuzu <bakalolka@gmail.com>
Date: Thu, 30 Dec 2021 17:23:46 +0200
Subject: [PATCH] rustc: build with jemalloc

This change should fix intermittent crashes on macOS Monterey.

Co-authored-by: Pavol Rusnak <pavol@rusnak.io>
---
 pkgs/development/compilers/rust/rustc.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/compilers/rust/rustc.nix b/pkgs/development/compilers/rust/rustc.nix
index 187127cfbfb3..1087ac059082 100644
--- a/pkgs/development/compilers/rust/rustc.nix
+++ b/pkgs/development/compilers/rust/rustc.nix
@@ -100,6 +100,9 @@ in stdenv.mkDerivation rec {
     "${setHost}.musl-root=${pkgsBuildHost.targetPackages.stdenv.cc.libc}"
   ] ++ optionals stdenv.targetPlatform.isMusl [
     "${setTarget}.musl-root=${pkgsBuildTarget.targetPackages.stdenv.cc.libc}"
+  ] ++ optionals (stdenv.isDarwin && stdenv.isx86_64) [
+    # https://github.com/rust-lang/rust/issues/92173
+    "--set rust.jemalloc"
   ];
 
   # The bootstrap.py will generated a Makefile that then executes the build.