From b2104d93ff319e26a036b1d5afe8d57322c536be Mon Sep 17 00:00:00 2001
From: Ding Xiang Fei <dingxiangfei2009@gmail.com>
Date: Fri, 27 Jul 2018 14:12:25 +0800
Subject: [PATCH] point to the right libxml2 header folder

---
 pkgs/servers/sql/postgresql/default.nix | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/pkgs/servers/sql/postgresql/default.nix b/pkgs/servers/sql/postgresql/default.nix
index e558e7ee5ae..81eb2f29ef9 100644
--- a/pkgs/servers/sql/postgresql/default.nix
+++ b/pkgs/servers/sql/postgresql/default.nix
@@ -14,21 +14,17 @@ let
     outputs = [ "out" "lib" "doc" "man" ];
     setOutputFlags = false; # $out retains configureFlags :-/
 
-    combinedLibXML2 = symlinkJoin {
-      name = "libxml2-combined";
-      paths = [ libxml2 libxml2.dev ];
-    };
-
-    nativeBuildInputs = [ combinedLibXML2 ];
-
     buildInputs =
-      [ zlib readline openssl makeWrapper ]
+      [ zlib readline openssl makeWrapper libxml2 ]
       ++ lib.optionals (!stdenv.isDarwin) [ libossp_uuid ];
 
     enableParallelBuilding = true;
 
     makeFlags = [ "world" ];
 
+    preConfigure = ''
+    export CFLAGS="$CFLAGS -I${libxml2.dev}/include/libxml2"
+    '';
     configureFlags = [
       "--with-openssl"
       "--with-libxml"