From 20eabe33864104ad9928450e5927ab7835f8f9e8 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Sat, 7 May 2022 11:43:21 +0200
Subject: [PATCH] vtk_9: Fix build
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Backport patch from 9.1.0 – unfortunately updating breaks vtk_9_withQt5.
---
 pkgs/development/libraries/vtk/9.x.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/libraries/vtk/9.x.nix b/pkgs/development/libraries/vtk/9.x.nix
index b95bcb2b869..5e918e8122f 100644
--- a/pkgs/development/libraries/vtk/9.x.nix
+++ b/pkgs/development/libraries/vtk/9.x.nix
@@ -2,4 +2,13 @@ import ./generic.nix {
   majorVersion = "9.0";
   minorVersion = "3";
   sourceSha256 = "vD65Ylsrjb/stgUqKrCR/JFAXeQzOw7GjzMjgVFU7Yo=";
+
+  patchesToFetch = [
+    # Add missing header includes.
+    # https://gitlab.kitware.com/vtk/vtk/-/merge_requests/7611
+    {
+     url = "https://gitlab.kitware.com/vtk/vtk/-/commit/e066c3f4fbbfe7470c6207db0fc3f3952db633cb.patch";
+     sha256 = "ggmDisS3qoMquOqrmIYlCIT7TLxP/DUtW29ktjaEnlM=";
+    }
+  ];
 }