[bug#27637] [PATCH 1/5] gnu: Add python-pytz

[Muriithi Frederick Muriuki <fredmanglis@gmail.com>]

* gnu/packages/package-management.scm (python-pytz, python2-pytz): New
* variables.
* Add expat license.
---
 gnu/packages/package-management.scm | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/package-management.scm b/gnu/packages/package-management.scm
index d2e30781b..e8a401f1c 100644
--- a/gnu/packages/package-management.scm
+++ b/gnu/packages/package-management.scm
@@ -25,7 +25,7 @@
   #:use-module (guix utils)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system python)
-  #:use-module ((guix licenses) #:select (gpl2+ gpl3+ lgpl2.1+ asl2.0))
+  #:use-module ((guix licenses) #:select (gpl2+ gpl3+ lgpl2.1+ asl2.0 expat))
   #:use-module (gnu packages)
   #:use-module (gnu packages guile)
   #:use-module (gnu packages file)
@@ -516,3 +516,28 @@ different.  It recursively unpacks archives of many kinds and transforms
 various binary formats into more human readable forms to compare them.  It can
 compare two tarballs, ISO images, or PDFs just as easily.")
     (license gpl3+)))
+
+(define-public python-pytz
+  (package
+    (name "python-pytz")
+    (version "2017.2")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "pytz" version ".zip"))
+       (sha256
+        (base32
+         "12cmd3j46d2gcw08bspvp6s9icfcvx88zjz52n1bli9dyvl5dh7m"))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("unzip" ,unzip)))
+    (home-page "http://pythonhosted.org/pytz")
+    (synopsis "World timezone definitions, modern and historical")
+    (description "This library brings the Olson tz database into Python.  It
+allows accurate and cross platform timezone calculations using Python 2.4 or
+higher.  It also solves the issue of ambiguous times at the end of daylight
+saving time.  Almost all of the Olson timezones are supported.")
+    (license expat)))
+
+(define-public python2-pytz
+  (package-with-python2 python-pytz))
-- 
2.13.2