From 0fe70e7fd4cf127299d63d43cf9cd996fbe6d778 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabian=20M=C3=B6ller?= <fabianm88@gmail.com>
Date: Sat, 9 Jan 2021 23:24:44 +0100
Subject: [PATCH] vulkan-loader: fix pkg-config include directory

With the last update the pkg-config file was changed to cmake variables,
which made substituteInPlace ineffective.

Fixes #108766
---
 .../libraries/vulkan-loader/default.nix          | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/libraries/vulkan-loader/default.nix b/pkgs/development/libraries/vulkan-loader/default.nix
index c833d770aeaf..b3882a919421 100644
--- a/pkgs/development/libraries/vulkan-loader/default.nix
+++ b/pkgs/development/libraries/vulkan-loader/default.nix
@@ -15,19 +15,23 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkg-config cmake ];
   buildInputs = [ python3 xlibsWrapper libxcb libXrandr libXext wayland ];
 
-  preConfigure = ''
-    substituteInPlace loader/vulkan.pc.in \
-      --replace 'includedir=''${prefix}/include' 'includedir=${vulkan-headers}/include' \
-      --replace 'libdir=''${exec_prefix}/@CMAKE_INSTALL_LIBDIR@' 'libdir=@CMAKE_INSTALL_LIBDIR@'
-  '';
-
   cmakeFlags = [
     "-DSYSCONFDIR=${addOpenGLRunpath.driverLink}/share"
     "-DVULKAN_HEADERS_INSTALL_DIR=${vulkan-headers}"
+    "-DCMAKE_INSTALL_INCLUDEDIR=${vulkan-headers}/include"
   ];
 
   outputs = [ "out" "dev" ];
 
+  doInstallCheck = true;
+
+  installCheckPhase = ''
+    grep -q "${vulkan-headers}/include" $dev/lib/pkgconfig/vulkan.pc || {
+      echo vulkan-headers include directory not found in pkg-config file
+      exit 1
+    }
+  '';
+
   meta = with lib; {
     description = "LunarG Vulkan loader";
     homepage    = "https://www.lunarg.com";