From 746372216154146311a1e289c269eb6669af88b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niklas=20Hamb=C3=BCchen?= <mail@nh2.me>
Date: Tue, 2 Nov 2021 00:26:12 +0000
Subject: [PATCH] libyaml-cpp: Fix wrong paths in pkg-config .pc file.

Same as in #71669.
---
 pkgs/development/libraries/libyaml-cpp/default.nix | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/libyaml-cpp/default.nix b/pkgs/development/libraries/libyaml-cpp/default.nix
index 0c3eb363a6bc1..d483448ce211d 100644
--- a/pkgs/development/libraries/libyaml-cpp/default.nix
+++ b/pkgs/development/libraries/libyaml-cpp/default.nix
@@ -22,7 +22,15 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  cmakeFlags = [ "-DBUILD_SHARED_LIBS=ON" "-DYAML_CPP_BUILD_TESTS=OFF" ];
+  cmakeFlags = [
+    "-DBUILD_SHARED_LIBS=ON"
+    "-DYAML_CPP_BUILD_TESTS=OFF"
+    # the cmake package does not handle absolute CMAKE_INSTALL_INCLUDEDIR correctly
+    # (setting it to an absolute path causes include files to go to $out/$out/include,
+    #  because the absolute path is interpreted with root at $out).
+    "-DCMAKE_INSTALL_INCLUDEDIR=include"
+    "-DCMAKE_INSTALL_LIBDIR=lib"
+  ];
 
   meta = with lib; {
     inherit (src.meta) homepage;