From b750697c1f537e90476aff0378f1b75add84e497 Mon Sep 17 00:00:00 2001
From: Thomas Tuegel <ttuegel@mailbox.org>
Date: Wed, 9 Sep 2020 13:27:35 -0500
Subject: [PATCH] glpk: do not hard code include path for libmysqlclient

---
 pkgs/development/libraries/glpk/default.nix | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/glpk/default.nix b/pkgs/development/libraries/glpk/default.nix
index 8c5a50c43d1..124e03baee1 100644
--- a/pkgs/development/libraries/glpk/default.nix
+++ b/pkgs/development/libraries/glpk/default.nix
@@ -1,6 +1,7 @@
 { stdenv
 , fetchurl
 , fetchpatch
+, libmysqlclient
 # Excerpt from glpk's INSTALL file:
 # This feature allows the exact simplex solver to use the GNU MP
 # bignum library. If it is disabled, the exact simplex solver uses the
@@ -21,9 +22,11 @@ stdenv.mkDerivation rec {
     sha256 = "040sfaa9jclg2nqdh83w71sv9rc1sznpnfiripjdyr48cady50a2";
   };
 
-  buildInputs = stdenv.lib.optionals withGmp [
-    gmp
-  ];
+  buildInputs =
+    [ libmysqlclient
+    ] ++ stdenv.lib.optionals withGmp [
+      gmp
+    ];
 
   configureFlags = stdenv.lib.optionals withGmp [
     "--with-gmp"
@@ -47,6 +50,13 @@ stdenv.mkDerivation rec {
     })
   ];
 
+  postPatch =
+    # Do not hardcode the include path for libmysqlclient.
+    ''
+      substituteInPlace configure \
+        --replace '-I/usr/include/mysql' '$(mysql_config --include)'
+    '';
+
   doCheck = true;
 
   meta = {