From f3fab8ac983e8f25293ef44abce52ceeb3e9c428 Mon Sep 17 00:00:00 2001
From: K900 <me@0upti.me>
Date: Sat, 3 Feb 2024 12:32:38 +0300
Subject: [PATCH] mesa: don't fail if $dev/lib/pkgconfig/dri.pc doesn't exist

It may not, if we're not building DRI
---
 pkgs/development/libraries/mesa/default.nix | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index f1a300ca957b..ea8088d7d8a3 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -316,8 +316,9 @@ self = stdenv.mkDerivation {
 
   postFixup = lib.optionalString stdenv.isLinux ''
     # set the default search path for DRI drivers; used e.g. by X server
-    substituteInPlace "$dev/lib/pkgconfig/dri.pc" --replace "$drivers" "${libglvnd.driverLink}"
-    [ -f "$dev/lib/pkgconfig/d3d.pc" ] && substituteInPlace "$dev/lib/pkgconfig/d3d.pc" --replace "$drivers" "${libglvnd.driverLink}"
+    for pc in lib/pkgconfig/{dri,d3d}.pc; do
+      [ -f "$dev/$pc" ] && substituteInPlace "$dev/$pc" --replace "$drivers" "${libglvnd.driverLink}"
+    done
 
     # remove pkgconfig files for GL/EGL; they are provided by libGL.
     rm -f $dev/lib/pkgconfig/{gl,egl}.pc