dev-python/python-dateutil: Use system tzdata correctly

Closes: https://bugs.gentoo.org/652226

1 files changed, 104 insertions, 0 deletions

diff --git a/dev-python/python-dateutil/files/0001-zoneinfo-Get-timezone-data-from-system-tzdata.patch b/dev-python/python-dateutil/files/0001-zoneinfo-Get-timezone-data-from-system-tzdata.patch
new file mode 100644
index 000000000000..2e3f4ee914ce
--- /dev/null
+++ b/dev-python/python-dateutil/files/0001-zoneinfo-Get-timezone-data-from-system-tzdata.patch
@@ -0,0 +1,104 @@
+From f48e70ae846c161dfbfe6ddb36e4bcad4427ac8c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
+Date: Tue, 3 Apr 2018 22:03:32 +0200
+Subject: [PATCH] zoneinfo: Get timezone data from system tzdata
+
+---
+ dateutil/test/test_imports.py |  3 +--
+ dateutil/zoneinfo/__init__.py | 25 ++++++++++++++-----------
+ 2 files changed, 15 insertions(+), 13 deletions(-)
+
+diff --git a/dateutil/test/test_imports.py b/dateutil/test/test_imports.py
+index 2a19b62..97d07e4 100644
+--- a/dateutil/test/test_imports.py
++++ b/dateutil/test/test_imports.py
+@@ -158,9 +158,8 @@ class ImportZoneInfoTest(unittest.TestCase):
+     def testZoneinfoStar(self):
+         from dateutil.zoneinfo import gettz
+         from dateutil.zoneinfo import gettz_db_metadata
+-        from dateutil.zoneinfo import rebuild
+ 
+-        zi_all = (gettz, gettz_db_metadata, rebuild)
++        zi_all = (gettz, gettz_db_metadata)
+ 
+         for var in zi_all:
+             self.assertIsNot(var, None)
+diff --git a/dateutil/zoneinfo/__init__.py b/dateutil/zoneinfo/__init__.py
+index 34f11ad..e9870ca 100644
+--- a/dateutil/zoneinfo/__init__.py
++++ b/dateutil/zoneinfo/__init__.py
+@@ -1,6 +1,7 @@
+ # -*- coding: utf-8 -*-
+ import warnings
+ import json
++import os
+ 
+ from tarfile import TarFile
+ from pkgutil import get_data
+@@ -10,7 +11,7 @@ from dateutil.tz import tzfile as _tzfile
+ 
+ __all__ = ["get_zonefile_instance", "gettz", "gettz_db_metadata"]
+ 
+-ZONEFILENAME = "dateutil-zoneinfo.tar.gz"
++ZONEDIRECTORY = "/usr/share/zoneinfo"
+ METADATA_FN = 'METADATA'
+ 
+ 
+@@ -19,12 +20,14 @@ class tzfile(_tzfile):
+         return (gettz, (self._filename,))
+ 
+ 
+-def getzoneinfofile_stream():
+-    try:
+-        return BytesIO(get_data(__name__, ZONEFILENAME))
+-    except IOError as e:  # TODO  switch to FileNotFoundError?
+-        warnings.warn("I/O error({0}): {1}".format(e.errno, e.strerror))
+-        return None
++def iter_zones(topdir):
++    for dirpath, dirnames, filenames in os.walk(topdir):
++        for f in filenames:
++            if f.endswith('.tab'):
++                continue
++            fpath = os.path.join(dirpath, f)
++            relpath = os.path.relpath(fpath, topdir)
++            yield (relpath, tzfile(fpath, filename=relpath))
+ 
+ 
+ class ZoneInfoFile(object):
+@@ -48,7 +51,7 @@ class ZoneInfoFile(object):
+                     # no metadata in tar file
+                     self.metadata = None
+         else:
+-            self.zones = {}
++            self.zones = dict(iter_zones(ZONEDIRECTORY))
+             self.metadata = None
+ 
+     def get(self, name, default=None):
+@@ -99,7 +102,7 @@ def get_zonefile_instance(new_instance=False):
+         zif = getattr(get_zonefile_instance, '_cached_instance', None)
+ 
+     if zif is None:
+-        zif = ZoneInfoFile(getzoneinfofile_stream())
++        zif = ZoneInfoFile()
+ 
+         get_zonefile_instance._cached_instance = zif
+ 
+@@ -140,7 +143,7 @@ def gettz(name):
+                   DeprecationWarning)
+ 
+     if len(_CLASS_ZONE_INSTANCE) == 0:
+-        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
++        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile())
+     return _CLASS_ZONE_INSTANCE[0].zones.get(name)
+ 
+ 
+@@ -163,5 +166,5 @@ def gettz_db_metadata():
+                   DeprecationWarning)
+ 
+     if len(_CLASS_ZONE_INSTANCE) == 0:
+-        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile(getzoneinfofile_stream()))
++        _CLASS_ZONE_INSTANCE.append(ZoneInfoFile())
+     return _CLASS_ZONE_INSTANCE[0].metadata
+-- 
+2.17.0
+