From 336155cf3f88a80fe4a48d273eeaef43d5322cf6 Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Wed, 1 Jan 2020 21:23:41 -0600
Subject: [PATCH] perlPackages.TimeDate: fix tests that fail as of 2020

---
 pkgs/development/perl-modules/timedate-2020.patch | 12 ++++++++++++
 pkgs/top-level/perl-packages.nix                  |  2 ++
 2 files changed, 14 insertions(+)
 create mode 100644 pkgs/development/perl-modules/timedate-2020.patch

diff --git a/pkgs/development/perl-modules/timedate-2020.patch b/pkgs/development/perl-modules/timedate-2020.patch
new file mode 100644
index 000000000000..ea4d8307f03a
--- /dev/null
+++ b/pkgs/development/perl-modules/timedate-2020.patch
@@ -0,0 +1,12 @@
+Index: TimeDate-2.30/t/getdate.t
+===================================================================
+--- TimeDate-2.30.orig/t/getdate.t
++++ TimeDate-2.30/t/getdate.t
+@@ -156,7 +156,7 @@ Jul 22 10:00:00 UTC 2002         ;102733200
+ !;
+ 
+ require Time::Local;
+-my $offset = Time::Local::timegm(0,0,0,1,0,70);
++my $offset = Time::Local::timegm(0,0,0,1,0,1970);
+ 
+ @data = split(/\n/, $data);
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 94ef32249981..db9c412877ff 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -19541,6 +19541,8 @@ let
       url = mirror://cpan/authors/id/G/GB/GBARR/TimeDate-2.30.tar.gz;
       sha256 = "11lf54akr9nbivqkjrhvkmfdgkbhw85sq0q4mak56n6bf542bgbm";
     };
+    # https://rt.cpan.org/Public/Bug/Display.html?id=124509
+    patches = [ ../development/perl-modules/timedate-2020.patch ];
   };
 
   TimeDuration = buildPerlPackage {