py-dataclasses: new package (#13564)

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

@@ -0,0 +1,18 @@
+# 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 PyDataclasses(PythonPackage):
+    """A backport of the dataclasses module for Python 3.6"""
+
+    homepage = "https://github.com/ericvsmith/dataclasses"
+    url      = "https://pypi.io/packages/source/d/dataclasses/dataclasses-0.7.tar.gz"
+
+    version('0.7', sha256='494a6dcae3b8bcf80848eea2ef64c0cc5cd307ffc263e17cdf42f3e5420808e6')
+
+    depends_on('python@3.6.00:3.6.99', type=('build', 'run'))
+    depends_on('py-setuptools', type='build')