From 65b4ff488b350376347422f94db9dbec1d713ea5 Mon Sep 17 00:00:00 2001
From: Jan Malakhovski <oxij@oxij.org>
Date: Thu, 9 Aug 2018 23:11:57 +0000
Subject: [PATCH] flex_2_5_35: make tests run, but disable

---
 pkgs/development/tools/parsing/flex/2.5.35.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/development/tools/parsing/flex/2.5.35.nix b/pkgs/development/tools/parsing/flex/2.5.35.nix
index 1062a361413c..1fdad9b62272 100644
--- a/pkgs/development/tools/parsing/flex/2.5.35.nix
+++ b/pkgs/development/tools/parsing/flex/2.5.35.nix
@@ -8,6 +8,10 @@ stdenv.mkDerivation rec {
     sha256 = "0wh06nix8bd4w1aq4k2fbbkdq5i30a9lxz3xczf3ff28yy0kfwzm";
   };
 
+  postPatch = ''
+    patchShebangs tests
+  '';
+
   nativeBuildInputs = [ flex bison texinfo help2man autoreconfHook ];
 
   propagatedBuildInputs = [ m4 ];
@@ -17,6 +21,8 @@ stdenv.mkDerivation rec {
     "ac_cv_func_realloc_0_nonnull=yes"
   ];
 
+  doCheck = false; # fails 2 out of 46 tests
+
   meta = {
     branch = "2.5.35";
     homepage = http://flex.sourceforge.net/;