python38Packages.backports-zoneinfo: test data for zoneinfo 2022a

Unfortunately test data needs to be continuously updated to match
zoneinfo or the tests will fail. This was relatively annoying and I'd
recommend just disabling the tests if this happens again.

pkgs/development/python-modules/backports-zoneinfo/default.nix

@@ -7,6 +7,7 @@
 , tzdata
 , hypothesis
 , pytestCheckHook
+, fetchpatch
 }:
 
 buildPythonPackage rec {
@@ -22,7 +23,25 @@ buildPythonPackage rec {
     sha256 = "sha256-00xdDOVdDanfsjQTd3yjMN2RFGel4cWRrAA3CvSnl24=";
   };
 
+  # Make sure test data update patch applies
+  prePatch = ''
+    substituteInPlace tests/data/zoneinfo_data.json --replace \"2020a\" \"2021a\"
+  '';
+
   patches = [
+    # Update test suite's test data to zoneinfo 2022a
+    # https://github.com/pganssle/zoneinfo/pull/115
+    (fetchpatch {
+      name = "backports-zoneinfo-2022a-update-test-data1.patch";
+      url = "https://github.com/pganssle/zoneinfo/pull/115/commits/837e2a0f9f1a1332e4233f83e3648fa564a9ec9e.patch";
+      sha256 = "196knwa212mr0b7zsh8papzr3f5mii87gcjjjx1r9zzvmk3g3ri0";
+    })
+    (fetchpatch {
+      name = "backports-zoneinfo-2022a-update-test-data2.patch";
+      url = "https://github.com/pganssle/zoneinfo/pull/115/commits/9fd330265b177916d6182249439bb40d5691eb58.patch";
+      sha256 = "1zxa5bkwi8hbnh4c0qv72wv6vdp5jlxqizfjsc05ymzvwa99cf75";
+    })
+
     (substituteAll {
       name = "zoneinfo-path";
       src = ./zoneinfo.patch;