From 666e3267850998efd257c660d67a156c41c8ab10 Mon Sep 17 00:00:00 2001
From: Tristan Ross <tristan.ross@midstall.com>
Date: Thu, 16 Jan 2025 21:19:32 -0800
Subject: [PATCH] alsa-lib: fix building with llvm

---
 pkgs/by-name/al/alsa-lib/package.nix | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/pkgs/by-name/al/alsa-lib/package.nix b/pkgs/by-name/al/alsa-lib/package.nix
index 21234c648375..f21d216a63bb 100644
--- a/pkgs/by-name/al/alsa-lib/package.nix
+++ b/pkgs/by-name/al/alsa-lib/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchurl,
+  fetchpatch,
   alsa-topology-conf,
   alsa-ucm-conf,
   testers,
@@ -16,13 +17,24 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-jE/zdVPL6JYY4Yfkx3n3GpuyqLJ7kfh+1AmHzJIz2PY=";
   };
 
-  patches = [
-    # Add a "libs" field to the syntax recognized in the /etc/asound.conf file.
-    # The nixos modules for pulseaudio, jack, and pipewire are leveraging this
-    # "libs" field to declare locations for both native and 32bit plugins, in
-    # order to support apps with 32bit sound running on x86_64 architecture.
-    ./alsa-plugin-conf-multilib.patch
-  ];
+  patches =
+    [
+      # Add a "libs" field to the syntax recognized in the /etc/asound.conf file.
+      # The nixos modules for pulseaudio, jack, and pipewire are leveraging this
+      # "libs" field to declare locations for both native and 32bit plugins, in
+      # order to support apps with 32bit sound running on x86_64 architecture.
+      ./alsa-plugin-conf-multilib.patch
+    ]
+    ++ lib.optional (stdenv.hostPlatform.useLLVM or false)
+      # Fixes version script under LLVM, should be fixed in the next update.
+      # Check if "pkgsLLVM.alsa-lib" builds on next version bump and remove this
+      # if it succeeds.
+      (
+        fetchurl {
+          url = "https://github.com/alsa-project/alsa-lib/commit/76edab4e595bd5f3f4c636cccc8d7976d3c519d6.patch";
+          hash = "sha256-WCOXfe0/PPZRMXdNa29Jn28S2r0PQ7iTsabsxZVSwnk=";
+        }
+      );
 
   enableParallelBuilding = true;