From a8ae782cacf2e5e9b594988586fdada415b2f406 Mon Sep 17 00:00:00 2001
From: Will Dietz <github@wdtz.org>
Date: Thu, 28 Jun 2018 16:34:52 -0500
Subject: [PATCH] bison: 2.7 -> 2.7.1 (#42726)

https://lists.gnu.org/archive/html/info-gnu/2013-04/msg00007.html

Been available for a while (2013), but seems good idea to update.
---
 pkgs/development/tools/parsing/bison/2.x.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/tools/parsing/bison/2.x.nix b/pkgs/development/tools/parsing/bison/2.x.nix
index d760cec62a04..77b52f4a0ba2 100644
--- a/pkgs/development/tools/parsing/bison/2.x.nix
+++ b/pkgs/development/tools/parsing/bison/2.x.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl, m4, perl }:
 
 stdenv.mkDerivation rec {
-  name = "bison-2.7";
+  name = "bison-2.7.1";
 
   src = fetchurl {
     url = "mirror://gnu/bison/${name}.tar.gz";
-    sha256 = "0cd8s2g7zjshya7kwjc9rh3drsssl4hiq4sccnkgf0nn9wvygfqr";
+    sha256 = "0c9li3iaslzzr3zig6m3zlmb4r8i0wfvkcrvdyiqxasb09mjkqh8";
   };
 
   nativeBuildInputs = [ m4 ] ++ stdenv.lib.optional doCheck perl;