From 450e4f91169a0c588106b53d89eee988e194c8fe Mon Sep 17 00:00:00 2001
From: Austin Horstman <khaneliman12@gmail.com>
Date: Sun, 7 Jun 2026 18:38:51 -0500
Subject: [PATCH 1/2] yabai: disable parallel building

Upstream's Makefile declares clean-build and bin/yabai as independent
prerequisites of all/install. With parallel make, clean-build can remove
./bin while clang is linking bin/yabai, causing ld to fail with errno=2.

This was hit by Hydra and nix-darwin with -j2/-j3. Upstream's Homebrew
HEAD formula also builds from source with make -j1 install, so keep
nixpkgs building from source and serialize make.
---
 pkgs/by-name/ya/yabai/package.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/by-name/ya/yabai/package.nix b/pkgs/by-name/ya/yabai/package.nix
index 0362cb72cf12..d20e3750a533 100644
--- a/pkgs/by-name/ya/yabai/package.nix
+++ b/pkgs/by-name/ya/yabai/package.nix
@@ -34,7 +34,8 @@ stdenv.mkDerivation (finalAttrs: {
     apple-sdk_15
   ];
 
-  enableParallelBuilding = true;
+  # Upstream Makefile races clean-build against linking under parallel make.
+  enableParallelBuilding = false;
 
   installPhase = ''
     runHook preInstall

From 3e76a1b13ed20dba86e306c3b8d20a82559bc0ff Mon Sep 17 00:00:00 2001
From: Austin Horstman <khaneliman12@gmail.com>
Date: Sun, 7 Jun 2026 18:48:11 -0500
Subject: [PATCH 2/2] yabai: remove Mach-O UUIDs

Darwin ld emits LC_UUID by default. yabai also embeds the
scripting-addition payload and loader binaries into the final
executable, so UUIDs from those intermediate Mach-O files make rebuilds
differ.

Pass -Wl,-no_uuid through the existing clang substitution so the main
binary and embedded OSAX binaries are deterministic.
---
 pkgs/by-name/ya/yabai/package.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/by-name/ya/yabai/package.nix b/pkgs/by-name/ya/yabai/package.nix
index d20e3750a533..13cf79193ff1 100644
--- a/pkgs/by-name/ya/yabai/package.nix
+++ b/pkgs/by-name/ya/yabai/package.nix
@@ -65,6 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
         "-isystem ${lib.getDev cups}/include"
         "-F$(SDKROOT)/System/Library/Frameworks"
         "-L$(SDKROOT)/usr/lib"
+        "-Wl,-no_uuid"
       ];
     in
     ''