From 2d25262a15880bac6de48a9c2aa5783e21509c7d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phan=20Kochen?= <git@stephank.nl>
Date: Mon, 21 Aug 2023 19:56:03 +0200
Subject: [PATCH] couchdb3: fix jiffy NIF on darwin

---
 pkgs/servers/http/couchdb/3.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/servers/http/couchdb/3.nix b/pkgs/servers/http/couchdb/3.nix
index 3ce5272c1d93..8913dae50be4 100644
--- a/pkgs/servers/http/couchdb/3.nix
+++ b/pkgs/servers/http/couchdb/3.nix
@@ -22,6 +22,10 @@ stdenv.mkDerivation rec {
     substituteInPlace src/couch/rebar.config.script --replace '/usr/include/mozjs-91' "${spidermonkey_91.dev}/include/mozjs-91"
     substituteInPlace configure --replace '/usr/include/''${SM_HEADERS}' "${spidermonkey_91.dev}/include/mozjs-91"
     patchShebangs bin/rebar
+  '' + lib.optionalString stdenv.isDarwin ''
+    # LTO with Clang produces LLVM bitcode, which causes linking to fail quietly.
+    # (There are warnings, but no hard errors, and it produces an empty dylib.)
+    substituteInPlace src/jiffy/rebar.config.script --replace '"-flto"' '""'
   '';
 
   nativeBuildInputs = [