Add new package py-freezegun (#11718)

var/spack/repos/builtin/packages/py-freezegun/package.py

@@ -0,0 +1,25 @@
+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class PyFreezegun(PythonPackage):
+    """FreezeGun is a library that allows your Python tests to travel
+    through time by mocking the datetime module."""
+
+    homepage = "https://github.com/spulec/freezegun"
+    url      = "https://pypi.io/packages/source/f/freezegun/freezegun-0.3.12.tar.gz"
+
+    import_modules = ['freezegun']
+
+    version('0.3.12', sha256='2a4d9c8cd3c04a201e20c313caf8b6338f1cfa4cda43f46a94cc4a9fd13ea5e7')
+
+    depends_on('py-setuptools', type='build')
+    depends_on('py-six', type=('build', 'run'))
+    depends_on('py-python-dateutil@1.0:1.999', type=('build', 'run'), when='^python@:2')
+    depends_on('py-python-dateutil@2:', type=('build', 'run'), when='^python@3:')
+    depends_on('py-mock', type='test')
+    depends_on('py-nose', type='test')