From 5d30f708b952a5f86a5df33468a03ce4dff59b24 Mon Sep 17 00:00:00 2001
From: Rick van Schijndel <rol3517@gmail.com>
Date: Sun, 19 Sep 2021 21:57:33 +0200
Subject: [PATCH] mesa: add llvm as dependency for llvm-config-native

Fixes https://github.com/NixOS/nixpkgs/issues/136926
---
 pkgs/development/libraries/mesa/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index 1d7b73a54196..035ff3b6e9c3 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -93,6 +93,10 @@ self = stdenv.mkDerivation {
     ++ lib.optional stdenv.isLinux "driversdev"
     ++ lib.optional enableOpenCL "opencl";
 
+  preConfigure = ''
+    PATH=${llvmPackages.libllvm.dev}/bin:$PATH
+  '';
+
   # TODO: Figure out how to enable opencl without having a runtime dependency on clang
   mesonFlags = [
     "--sysconfdir=/etc"