From 97c5cf0bf24f868b6603f343d501fc9e880e4e48 Mon Sep 17 00:00:00 2001
From: Luke Adams <luke.adams@belljar.io>
Date: Fri, 14 Jul 2017 18:58:08 -0500
Subject: [PATCH] qwt6_qt4: preFixup: Repair relative reference in darwin
 framework output

---
 pkgs/development/libraries/qwt/6_qt4.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/libraries/qwt/6_qt4.nix b/pkgs/development/libraries/qwt/6_qt4.nix
index 6f722c599209..7c037db0aed2 100644
--- a/pkgs/development/libraries/qwt/6_qt4.nix
+++ b/pkgs/development/libraries/qwt/6_qt4.nix
@@ -18,6 +18,13 @@ stdenv.mkDerivation rec {
     sed -e "s|QWT_INSTALL_PREFIX.*=.*|QWT_INSTALL_PREFIX = $out|g" -i qwtconfig.pri
   '';
 
+  # qwt.framework output includes a relative reference to itself, which breaks dependents
+  preFixup =
+    stdenv.lib.optionalString stdenv.isDarwin ''
+      echo "Attempting to repair qwt"
+      install_name_tool -id "$out/lib/qwt.framework/Versions/6/qwt" "$out/lib/qwt.framework/Versions/6/qwt"
+    '';
+
   qmakeFlags = [ "-after doc.path=$out/share/doc/${name}" ];
 
   meta = with stdenv.lib; {