From 00a99022970690c6a255e671eae176096f3160bc Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Tue, 5 Sep 2017 13:27:20 +0200
Subject: [PATCH] at: 3.1.16 -> 3.1.20

---
 pkgs/tools/system/at/default.nix | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/pkgs/tools/system/at/default.nix b/pkgs/tools/system/at/default.nix
index 4c1a5431f3eb..501a1bde33b3 100644
--- a/pkgs/tools/system/at/default.nix
+++ b/pkgs/tools/system/at/default.nix
@@ -1,12 +1,13 @@
 { fetchurl, stdenv, bison, flex, pam, sendmailPath ? "/run/wrappers/bin/sendmail" }:
 
-stdenv.mkDerivation {
-  name = "at-3.1.16";
+stdenv.mkDerivation rec {
+  name = "at-${version}";
+  version = "3.1.20";
 
   src = fetchurl {
     # Debian is apparently the last location where it can be found.
-    url = mirror://debian/pool/main/a/at/at_3.1.16.orig.tar.gz;
-    sha256 = "1hfmnhgi95vsfaa69qlakpwd22al0m0rhqms6sawxvaldafgb6nb";
+    url = "mirror://debian/pool/main/a/at/at_${version}.orig.tar.gz";
+    sha256 = "1fgsrqpx0r6qcjxmlsqnwilydhfxn976c870mjc0n1bkmcy94w88";
   };
 
   patches = [ ./install.patch ];